UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: September 30, 2011

Check here if Amendment [  ]; Amendment Number:
This Amendment (Check only one.): [  ] is a restatement.
                                  [  ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:    Allied Irish Banks, p.l.c.
Address: Office of the Secretary
         Block K Level 4  -  Bankcentre
         Ballsbridge, Dublin 4 Ireland

13F File Number:  028-05346

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:      Ruth Hegarty
Title:     Office of the Secretary
Phone:     00 353 1 641 3906

Signature, Place, and Date of Signing:

 /s/ Ruth Hegarty     Dublin, Ireland     November 10, 2011

Report Type (Check only one.):

[ X]         13F HOLDINGS REPORT.

[  ]         13F NOTICE.

[  ]         13F COMBINATION REPORT.



                              FORM 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:         0

Form 13F Information Table Entry Total:    147

Form 13F Information Table Value Total:    $870,767 (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional managers with respect to which this report is filed, other
than the manager filing this report.

NONE



                                    
                                                     FORM 13F INFORMATION TABLE
                                                             VALUE  SHARES/ SH/ PUT/ INVSTMT  OTHER            VOTING AUTHORITY
NAME OF ISSUER                 TITLE OF CLASS   CUSIP     (x$1000)  PRN AMT PRN CALL DSCRETN MANAGERS         SOLE   SHARED     NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
3M CO                          COM              88579Y101    14671   204360 SH       DEFINED                204360        0        0
ABBOTT LABS                    COM              002824100     9332   182494 SH       DEFINED                182494        0        0
ADOBE SYS INC                  COM              00724F101       99     4081 SH       DEFINED                  4081        0        0
AFFILIATED MANAGERS GROUP      COM              008252108       62      793 SH       DEFINED                   793        0        0
AFLAC INC                      COM              001055102       36     1029 SH       DEFINED                  1029        0        0
ALLSTATE CORP                  COM              020002101     2744   115849 SH       DEFINED                115849        0        0
AMAZON COM INC                 COM              023135106      158      731 SH       DEFINED                   731        0        0
AMERICAN ELEC PWR INC          COM              025537101      159     4178 SH       DEFINED                  4178        0        0
AMERICAN EXPRESS CO            COM              025816109      165     3674 SH       DEFINED                  3674        0        0
AMERICAN TOWER CORP            CL A             029912201     2104    39115 SH       DEFINED                 39115        0        0
AMGEN INC                      COM              031162100      120     2179 SH       DEFINED                  2179        0        0
ANADARKO PETE CORP             COM              032511107     5129    81354 SH       DEFINED                 81354        0        0
AON CORP                       COM              037389103      339     8078 SH       DEFINED                  8078        0        0
APACHE CORP                    COM              037411105      177     2210 SH       DEFINED                  2210        0        0
APPLE INC                      COM              037833100    36410    95484 SH       DEFINED                 95484        0        0
AT&T INC                       COM              00206R102    10457   366652 SH       DEFINED                366652        0        0
AVON PRODS INC                 COM              054303102       83     4251 SH       DEFINED                  4251        0        0
BAKER HUGHES INC               COM              057224107      540    11701 SH       DEFINED                 11701        0        0
BANK OF AMERICA CORPORATION    COM              060505104     1407   229978 SH       DEFINED                229978        0        0
BAXTER INTL INC                COM              071813109    12180   216966 SH       DEFINED                216966        0        0
BERKSHIRE HATHAWAY INC DEL     CL B NEW         084670702      356     5018 SH       DEFINED                  5018        0        0
BOEING CO                      COM              097023105      101     1662 SH       DEFINED                  1662        0        0
BP PLC                         SPONSORED ADR    055622104       10      303 SH       DEFINED                   303        0        0
BRISTOL MYERS SQUIBB CO        COM              110122108       32     1036 SH       DEFINED                  1036        0        0
C H ROBINSON WORLDWIDE INC     COM NEW          12541W209     9306   135909 SH       DEFINED                135909        0        0
CARDINAL HEALTH INC            COM              14149Y108     7682   183428 SH       DEFINED                183428        0        0
CATERPILLAR INC DEL            COM              149123101     1572    21285 SH       DEFINED                 21285        0        0
CHEVRON CORP NEW               COM              166764100    36158   390515 SH       DEFINED                390515        0        0
CHIPOTLE MEXICAN GRILL INC     COM              169656105     7082    23377 SH       DEFINED                 23377        0        0
CISCO SYS INC                  COM              17275R102     3951   254884 SH       DEFINED                254884        0        0
CITIGROUP INC                  COM NEW          172967424     7180   280305 SH       DEFINED                280305        0        0
CITRIX SYS INC                 COM              177376100      105     1929 SH       DEFINED                  1929        0        0
COACH INC                      COM              189754104       93     1800 SH       DEFINED                  1800        0        0
COCA COLA CO                   COM              191216100     5390    79781 SH       DEFINED                 79781        0        0
COLGATE PALMOLIVE CO           COM              194162103     6915    77983 SH       DEFINED                 77983        0        0
CONOCOPHILLIPS                 COM              20825C104      983    15517 SH       DEFINED                 15517        0        0
COOPER INDS PLC                COM USD0.01      00B40K911      303     6574 SH       DEFINED                  6574        0        0
COVIDIEN PLC                   USD0.20 (POST)   00B68SQD2     6140   139222 SH       DEFINED                139222        0        0
CREE INC                       COM              225447101     1023    39358 SH       DEFINED                 39358        0        0
CROWN HOLDINGS INC             COM              228368106     1731    56539 SH       DEFINED                 56539        0        0
DEERE & CO                     COM              244199105     1504    23289 SH       DEFINED                 23289        0        0
DEVRY INC DEL                  COM              251893103     1991    53876 SH       DEFINED                 53876        0        0
DISNEY WALT CO                 COM DISNEY       254687106     4654   154297 SH       DEFINED                154297        0        0
DOLBY LABORATORIES INC         COM              25659T107     2283    83208 SH       DEFINED                 83208        0        0
DOLLAR TREE INC                COM              256746108    15603   207647 SH       DEFINED                207647        0        0
E M C CORP MASS                COM              268648102      101     4811 SH       DEFINED                  4811        0        0
EBAY INC                       COM              278642103      190     6437 SH       DEFINED                  6437        0        0
EMERSON ELEC CO                COM              291011104    12309   297973 SH       DEFINED                297973        0        0
EXXON MOBIL CORP               COM              30231G102    31010   426969 SH       DEFINED                426969        0        0
FEDEX CORP                     COM              31428X106      135     1997 SH       DEFINED                  1997        0        0
FIRST HORIZON NATL CORP        COM              320517105       56     9333 SH       DEFINED                  9333        0        0
FLUOR CORP NEW                 COM              343412102       99     2118 SH       DEFINED                  2118        0        0
FREEPORT-MCMORAN COPPER & GO   COM              35671D857       73     2395 SH       DEFINED                  2395        0        0
GENERAL ELECTRIC CO            COM              369604103     9924   652052 SH       DEFINED                652052        0        0
GENERAL MLS INC                COM              370334104    13801   358558 SH       DEFINED                358558        0        0
GILEAD SCIENCES INC            COM              375558103    13480   347434 SH       DEFINED                347434        0        0
GLAXOSMITHKLINE PLC            SPONSORED ADR    37733W105       54     1320 SH       DEFINED                  1320        0        0
GOLDMAN SACHS GROUP INC        COM              38141G104     1713    18113 SH       DEFINED                 18113        0        0
GOOGLE INC                     CL A             38259P508    10560    20504 SH       DEFINED                 20504        0        0
GREENHILL & CO INC             COM              395259104     1672    58494 SH       DEFINED                 58494        0        0
HARLEY DAVIDSON INC            COM              412822108     5419   157864 SH       DEFINED                157864        0        0
HEINZ H J CO                   COM              423074103       24      477 SH       DEFINED                   477        0        0
HEWLETT PACKARD CO             COM              428236103     1714    76342 SH       DEFINED                 76342        0        0
HOME DEPOT INC                 COM              437076102      120     3660 SH       DEFINED                  3660        0        0
HONEYWELL INTL INC             COM              438516106      197     4507 SH       DEFINED                  4507        0        0
ILLINOIS TOOL WKS INC          COM              452308109     3755    90292 SH       DEFINED                 90292        0        0
INTEL CORP                     COM              458140100    10265   481156 SH       DEFINED                481156        0        0
INTERCONTINENTALEXCHANGE INC   COM              45865V100     6523    55162 SH       DEFINED                 55162        0        0
INTERNATIONAL BUSINESS MACHS   COM              459200101    32783   187468 SH       DEFINED                187468        0        0
INTL PAPER CO                  COM              460146103       14      600 SH       DEFINED                   600        0        0
INVESCO LTD                    SHS              G491BT108       60     3895 SH       DEFINED                  3895        0        0
ISHARES TR                     DJ SEL DIV INX   464287168      145     3000 SH       DEFINED                  3000        0        0
JOHNSON & JOHNSON              COM              478160104    25846   405810 SH       DEFINED                405810        0        0
JPMORGAN CHASE & CO            COM              46625H100    20882   693309 SH       DEFINED                693309        0        0
KELLOGG CO                     COM              487836108      342     6432 SH       DEFINED                  6432        0        0
KRAFT FOODS INC                CL A             50075N104     5423   161516 SH       DEFINED                161516        0        0
LANDSTAR SYS INC               COM              515098101     3067    77537 SH       DEFINED                 77537        0        0
LINCOLN NATL CORP IND          COM              534187109      367    23496 SH       DEFINED                 23496        0        0
LOCKHEED MARTIN CORP           COM              539830109     7095    97674 SH       DEFINED                 97674        0        0
MARKET VECTORS ETF TR          GOLD MINER ETF   57060U100     8571   155295 SH       DEFINED                155295        0        0
MARSH & MCLENNAN COS INC       COM              571748102    10164   382817 SH       DEFINED                382817        0        0
MCDONALDS CORP                 COM              580135101    12372   140889 SH       DEFINED                140889        0        0
MEAD JOHNSON NUTRITION CO      COM              582839106     7170   104166 SH       DEFINED                104166        0        0
MEDNAX INC                     COM              58502B106     3842    61342 SH       DEFINED                 61342        0        0
MERCK & CO INC NEW             COM              58933Y105    11473   350852 SH       DEFINED                350852        0        0
METLIFE INC                    COM              59156R108    11536   411863 SH       DEFINED                411863        0        0
MICROCHIP TECHNOLOGY INC       COM              595017104     9683   311242 SH       DEFINED                311242        0        0
MICROSOFT CORP                 COM              594918104    23755   954389 SH       DEFINED                954389        0        0
MONSANTO CO NEW                COM              61166W101     3523    58677 SH       DEFINED                 58677        0        0
NATIONAL OILWELL VARCO INC     COM              637071101     9812   191570 SH       DEFINED                191570        0        0
NEWELL RUBBERMAID INC          COM              651229106     5650   476031 SH       DEFINED                476031        0        0
NIKE INC                       CL B             654106103    10033   117337 SH       DEFINED                117337        0        0
NOBLE CORP COM                 CHF4.75          003334731     1801    61359 SH       DEFINED                 61359        0        0
NORFOLK SOUTHERN CORP          COM              655844108     2637    43209 SH       DEFINED                 43209        0        0
NORTHERN TR CORP               COM              665859104     5584   159630 SH       DEFINED                159630        0        0
OCCIDENTAL PETE CORP DEL       COM              674599105      125     1751 SH       DEFINED                  1751        0        0
OMNICOM GROUP INC              COM              681919106      141     3836 SH       DEFINED                  3836        0        0
ORACLE CORP                    COM              68389X105    26313   915563 SH       DEFINED                915563        0        0
ORASURE TECHNOLOGIES INC       COM              68554V108      285    35000 SH       DEFINED                 35000        0        0
PEPSICO INC                    COM              713448108     6826   110268 SH       DEFINED                110268        0        0
PFIZER INC                     COM              717081103     2903   164211 SH       DEFINED                164211        0        0
PHILIP MORRIS INTL INC         COM              718172109    24241   388607 SH       DEFINED                388607        0        0
POOL CORPORATION               COM              73278L105     5250   200519 SH       DEFINED                200519        0        0
PROCTER & GAMBLE CO            COM              742718109    24433   386723 SH       DEFINED                386723        0        0
PRUDENTIAL FINL INC            COM              744320102       47     1010 SH       DEFINED                  1010        0        0
PUBLIC SVC ENTERPRISE GROUP    COM              744573106     6369   190861 SH       DEFINED                190861        0        0
QUALCOMM INC                   COM              747525103      139     2861 SH       DEFINED                  2861        0        0
REYNOLDS AMERICAN INC          COM              761713106       18      486 SH       DEFINED                   486        0        0
ROCKWELL AUTOMATION INC        COM              773903109      132     2355 SH       DEFINED                  2355        0        0
ROPER INDS INC NEW             COM              776696106      151     2185 SH       DEFINED                  2185        0        0
SCHEIN HENRY INC               COM              806407102      384     6190 SH       DEFINED                  6190        0        0
SCHLUMBERGER LTD               COM              806857108     4460    74672 SH       DEFINED                 74672        0        0
SELECT SECTOR SPDR TR          SBI INT-FINL     81369Y605       46     3874 SH       DEFINED                  3874        0        0
SELECT SECTOR SPDR TR          SBI INT-UTILS    81369Y886     3782   112498 SH       DEFINED                112498        0        0
SELECT SECTOR SPDR TR          SBI MATERIALS    81369Y100      338    11527 SH       DEFINED                 11527        0        0
SIMON PPTY GROUP INC NEW       COM              828806109     3622    32933 SH       DEFINED                 32933        0        0
SOUTHERN CO                    COM              842587107     8252   194776 SH       DEFINED                194776        0        0
SOUTHWESTERN ENERGY CO         COM              845467109     2695    80847 SH       DEFINED                 80847        0        0
SPDR S&P 500 ETF TR            TR UNIT          78462F103    24433   215931 SH       DEFINED                215931        0        0
STANLEY BLACK & DECKER INC     COM              854502101     3743    76232 SH       DEFINED                 76232        0        0
STARBUCKS CORP                 COM              855244109      194     5203 SH       DEFINED                  5203        0        0
STERICYCLE INC                 COM              858912108      182     2252 SH       DEFINED                  2252        0        0
STRYKER CORP                   COM              863667101     3115    66099 SH       DEFINED                 66099        0        0
SYSCO CORP                     COM              871829107       47     1842 SH       DEFINED                  1842        0        0
TEREX CORP NEW                 COM              880779103      642    62558 SH       DEFINED                 62558        0        0
TEVA PHARMACEUTICAL INDS LTD   ADR              881624209     6701   180039 SH       DEFINED                180039        0        0
TEXAS INSTRS INC               COM              882508104      183     6884 SH       DEFINED                  6884        0        0
THERMO FISHER SCIENTIFIC INC   COM              883556102     9174   181165 SH       DEFINED                181165        0        0
TIME WARNER CABLE INC          COM              88732J207      159     2536 SH       DEFINED                  2536        0        0
TIME WARNER INC                COM NEW          887317303     3764   125576 SH       DEFINED                125576        0        0
TJX COS INC NEW                COM              872540109    16021   288817 SH       DEFINED                288817        0        0
TRANSITION THERAPEUTICS INC    COM NEW          893716209       95    53000 SH       DEFINED                 53000        0        0
ULTA SALON COSMETCS & FRAG I   COM              90384S303     6497   104404 SH       DEFINED                104404        0        0
UNITED PARCEL SERVICE INC      CL B             911312106      200     3174 SH       DEFINED                  3174        0        0
UNITED TECHNOLOGIES CORP       COM              913017109    10140   144120 SH       DEFINED                144120        0        0
UNITEDHEALTH GROUP INC         COM              91324P102      115     2489 SH       DEFINED                  2489        0        0
US BANCORP DEL                 COM NEW          902973304    19340   821565 SH       DEFINED                821565        0        0
V F CORP                       COM              918204108    12696   104476 SH       DEFINED                104476        0        0
VALERO ENERGY CORP NEW         COM              91913Y100     1847   103874 SH       DEFINED                103874        0        0
VERIZON COMMUNICATIONS INC     COM              92343V104    15963   433767 SH       DEFINED                433767        0        0
WAL MART STORES INC            COM              931142103    13459   259320 SH       DEFINED                259320        0        0
WALGREEN CO                    COM              931422109    12925   392978 SH       DEFINED                392978        0        0
WATERS CORP                    COM              941848103     3066    40611 SH       DEFINED                 40611        0        0
WEATHERFORD INT LT             CHF0.01          003883839     3459   283325 SH       DEFINED                283325        0        0
WEBMD HEALTH CORP              COM              94770V102     2544    84382 SH       DEFINED                 84382        0        0
WELLS FARGO & CO NEW           COM              949746101     3607   149574 SH       DEFINED                149574        0        0
WHOLE FOODS MKT INC            COM              966837106      160     2447 SH       DEFINED                  2447        0        0