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

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: December 31, 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     February 10, 2012

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:    144

Form 13F Information Table Value Total:    $984,395 (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    17675   216261 SH       DEFINED                216261        0        0
ABBOTT LABS                    COM              002824100     9014   160320 SH       DEFINED                160320        0        0
ADOBE SYS INC                  COM              00724F101      115     4081 SH       DEFINED                  4081        0        0
AFFILIATED MANAGERS GROUP      COM              008252108      155     1620 SH       DEFINED                  1620        0        0
AFLAC INC                      COM              001055102       45     1029 SH       DEFINED                  1029        0        0
AMAZON COM INC                 COM              023135106      127      731 SH       DEFINED                   731        0        0
AMERICAN ELEC PWR INC          COM              025537101      173     4178 SH       DEFINED                  4178        0        0
AMERICAN EXPRESS CO            COM              025816109      173     3674 SH       DEFINED                  3674        0        0
AMERICAN TOWER CORP            CL A             029912201     2654    44225 SH       DEFINED                 44225        0        0
AMGEN INC                      COM              031162100      140     2179 SH       DEFINED                  2179        0        0
ANADARKO PETE CORP             COM              032511107     6312    82699 SH       DEFINED                 82699        0        0
AON CORP                       COM              037389103      488    10421 SH       DEFINED                 10421        0        0
APACHE CORP                    COM              037411105     5061    55868 SH       DEFINED                 55868        0        0
APPLE INC                      COM              037833100    40724   100552 SH       DEFINED                100552        0        0
AT&T INC                       COM              00206R102    12346   408253 SH       DEFINED                408253        0        0
AVON PRODS INC                 COM              054303102       74     4251 SH       DEFINED                  4251        0        0
BANK OF AMERICA CORPORATION    COM              060505104     1301   234029 SH       DEFINED                234029        0        0
BAXTER INTL INC                COM              071813109     5278   106669 SH       DEFINED                106669        0        0
BERKSHIRE HATHAWAY INC DEL     CL B NEW         084670702      383     5018 SH       DEFINED                  5018        0        0
BLACKSTONE GROUP L P           COM UNIT LTD     09253U108      126     9021 SH       DEFINED                  9021        0        0
BOEING CO                      COM              097023105      122     1662 SH       DEFINED                  1662        0        0
BP PLC                         SPONSORED ADR    055622104       13      303 SH       DEFINED                   303        0        0
BRISTOL MYERS SQUIBB CO        COM              110122108       36     1036 SH       DEFINED                  1036        0        0
C H ROBINSON WORLDWIDE INC     COM NEW          12541W209    10020   143592 SH       DEFINED                143592        0        0
CARDINAL HEALTH INC            COM              14149Y108     8663   213316 SH       DEFINED                213316        0        0
CATERPILLAR INC DEL            COM              149123101     1828    20181 SH       DEFINED                 20181        0        0
CHEVRON CORP NEW               COM              166764100    38218   359193 SH       DEFINED                359193        0        0
CHIPOTLE MEXICAN GRILL INC     COM              169656105     4687    13878 SH       DEFINED                 13878        0        0
CISCO SYS INC                  COM              17275R102     4683   258989 SH       DEFINED                258989        0        0
CITIGROUP INC                  COM NEW          172967424     7762   295024 SH       DEFINED                295024        0        0
CITRIX SYS INC                 COM              177376100      117     1929 SH       DEFINED                  1929        0        0
COACH INC                      COM              189754104      110     1800 SH       DEFINED                  1800        0        0
COCA COLA CO                   COM              191216100     5681    81196 SH       DEFINED                 81196        0        0
COLGATE PALMOLIVE CO           COM              194162103     5812    62914 SH       DEFINED                 62914        0        0
CONOCOPHILLIPS                 COM              20825C104      801    10991 SH       DEFINED                 10991        0        0
COOPER INDS PLC                COM USD0.01      00B40K911      356     6574 SH       DEFINED                  6574        0        0
COVIDIEN PLC                   USD0.20(POST CON)00B68SQD2     9547   212102 SH       DEFINED                212102        0        0
CREE INC                       COM              225447101      877    39805 SH       DEFINED                 39805        0        0
CROWN HOLDINGS INC             COM              228368106     1931    57511 SH       DEFINED                 57511        0        0
DEERE & CO                     COM              244199105     1829    23642 SH       DEFINED                 23642        0        0
DEVRY INC DEL                  COM              251893103     2104    54710 SH       DEFINED                 54710        0        0
DISNEY WALT CO                 COM DISNEY       254687106    10215   272405 SH       DEFINED                272405        0        0
DOLBY LABORATORIES INC         COM              25659T107     2581    84598 SH       DEFINED                 84598        0        0
DOLLAR TREE INC                COM              256746108    13939   167718 SH       DEFINED                167718        0        0
E M C CORP MASS                COM              268648102      104     4811 SH       DEFINED                  4811        0        0
EBAY INC                       COM              278642103      195     6437 SH       DEFINED                  6437        0        0
EMERSON ELEC CO                COM              291011104    17920   384632 SH       DEFINED                384632        0        0
EXXON MOBIL CORP               COM              30231G102    39964   471515 SH       DEFINED                471515        0        0
FEDEX CORP                     COM              31428X106      167     1997 SH       DEFINED                  1997        0        0
FIRST HORIZON NATL CORP        COM              320517105       75     9333 SH       DEFINED                  9333        0        0
FLUOR CORP NEW                 COM              343412102      106     2118 SH       DEFINED                  2118        0        0
FREEPORT-MCMORAN COPPER & GO   COM              35671D857       88     2395 SH       DEFINED                  2395        0        0
GENERAL ELECTRIC CO            COM              369604103    12291   686258 SH       DEFINED                686258        0        0
GENERAL MLS INC                COM              370334104    15439   382062 SH       DEFINED                382062        0        0
GILEAD SCIENCES INC            COM              375558103    15083   368508 SH       DEFINED                368508        0        0
GLAXOSMITHKLINE PLC            SPONSORED ADR    37733W105       59     1320 SH       DEFINED                  1320        0        0
GOLDMAN SACHS GROUP INC        COM              38141G104     1666    18422 SH       DEFINED                 18422        0        0
GOOGLE INC                     CL A             38259P508    14052    21755 SH       DEFINED                 21755        0        0
GREENHILL & CO INC             COM              395259104     2159    59352 SH       DEFINED                 59352        0        0
HARLEY DAVIDSON INC            COM              412822108     6509   167461 SH       DEFINED                167461        0        0
HEINZ H J CO                   COM              423074103       25      477 SH       DEFINED                   477        0        0
HEWLETT PACKARD CO             COM              428236103     1997    77523 SH       DEFINED                 77523        0        0
HOME DEPOT INC                 COM              437076102      154     3660 SH       DEFINED                  3660        0        0
HONEYWELL INTL INC             COM              438516106      244     4507 SH       DEFINED                  4507        0        0
ILLINOIS TOOL WKS INC          COM              452308109     2876    61569 SH       DEFINED                 61569        0        0
INTEL CORP                     COM              458140100    13835   570527 SH       DEFINED                570527        0        0
INTERCONTINENTALEXCHANGE INC   COM              45865V100     6990    57985 SH       DEFINED                 57985        0        0
INTERNATIONAL BUSINESS MACHS   COM              459200101    36623   199168 SH       DEFINED                199168        0        0
INTL PAPER CO                  COM              460146103       18      600 SH       DEFINED                   600        0        0
ISHARES TR                     DJ SEL DIV INX   464287168      161     3000 SH       DEFINED                  3000        0        0
JOHNSON & JOHNSON              COM              478160104    27690   422235 SH       DEFINED                422235        0        0
JPMORGAN CHASE & CO            COM              46625H100    26269   790048 SH       DEFINED                790048        0        0
KELLOGG CO                     COM              487836108      406     8032 SH       DEFINED                  8032        0        0
KRAFT FOODS INC                CL A             50075N104     5983   160155 SH       DEFINED                160155        0        0
LANDSTAR SYS INC               COM              515098101     3765    78571 SH       DEFINED                 78571        0        0
LINCOLN NATL CORP IND          COM              534187109      456    23496 SH       DEFINED                 23496        0        0
LOCKHEED MARTIN CORP           COM              539830109     9179   113463 SH       DEFINED                113463        0        0
MARKET VECTORS ETF TR          GOLD MINER ETF   57060U100     8102   157540 SH       DEFINED                157540        0        0
MARKWEST ENERGY PARTNERS L P   UNIT LTD PARTN   570759100       21      375 SH       DEFINED                   375        0        0
MARSH & MCLENNAN COS INC       COM              571748102    13916   440088 SH       DEFINED                440088        0        0
MCDONALDS CORP                 COM              580135101    16301   162489 SH       DEFINED                162489        0        0
MEAD JOHNSON NUTRITION CO      COM              582839106     7441   108269 SH       DEFINED                108269        0        0
MEDNAX INC                     COM              58502B106     4473    62115 SH       DEFINED                 62115        0        0
MERCK & CO INC NEW             COM              58933Y105    13806   366220 SH       DEFINED                366220        0        0
METLIFE INC                    COM              59156R108    16970   544262 SH       DEFINED                544262        0        0
MICROCHIP TECHNOLOGY INC       COM              595017104    11766   321225 SH       DEFINED                321225        0        0
MICROSOFT CORP                 COM              594918104    27967  1077317 SH       DEFINED               1077317        0        0
MONSANTO CO NEW                COM              61166W101     4177    59609 SH       DEFINED                 59609        0        0
NATIONAL OILWELL VARCO INC     COM              637071101    13692   201383 SH       DEFINED                201383        0        0
NEWELL RUBBERMAID INC          COM              651229106    11498   711970 SH       DEFINED                711970        0        0
NIKE INC                       CL B             654106103     7632    79194 SH       DEFINED                 79194        0        0
NOBLE CORP COM                 CHF4.75          003334731     1884    62329 SH       DEFINED                 62329        0        0
NORFOLK SOUTHERN CORP          COM              655844108     3200    43926 SH       DEFINED                 43926        0        0
NORTHERN TR CORP               COM              665859104     6653   167741 SH       DEFINED                167741        0        0
OCCIDENTAL PETE CORP DEL       COM              674599105      164     1751 SH       DEFINED                  1751        0        0
OMNICOM GROUP INC              COM              681919106      171     3836 SH       DEFINED                  3836        0        0
ORACLE CORP                    COM              68389X105    24876   969834 SH       DEFINED                969834        0        0
ORASURE TECHNOLOGIES INC       COM              68554V108      299    35000 SH       DEFINED                     0        0        0
PEPSICO INC                    COM              713448108     7503   113084 SH       DEFINED                113084        0        0
PFIZER INC                     COM              717081103     5168   238811 SH       DEFINED                238811        0        0
PHILIP MORRIS INTL INC         COM              718172109    31646   403232 SH       DEFINED                403232        0        0
POOL CORPORATION               COM              73278L105     6303   209396 SH       DEFINED                209396        0        0
PROCTER & GAMBLE CO            COM              742718109    23980   359472 SH       DEFINED                359472        0        0
PRUDENTIAL FINL INC            COM              744320102      133     2661 SH       DEFINED                  2661        0        0
PUBLIC SVC ENTERPRISE GROUP    COM              744573106     6406   194069 SH       DEFINED                194069        0        0
QUALCOMM INC                   COM              747525103      156     2861 SH       DEFINED                  2861        0        0
ROCKWELL AUTOMATION INC        COM              773903109      173     2355 SH       DEFINED                  2355        0        0
ROPER INDS INC NEW             COM              776696106      190     2185 SH       DEFINED                  2185        0        0
SCHEIN HENRY INC               COM              806407102      418     6489 SH       DEFINED                  6489        0        0
SCHLUMBERGER LTD               COM              806857108     6494    95061 SH       DEFINED                 95061        0        0
SELECT SECTOR SPDR TR          SBI INT-FINL     81369Y605       50     3874 SH       DEFINED                  3874        0        0
SELECT SECTOR SPDR TR          SBI INT-UTILS    81369Y886     6411   178178 SH       DEFINED                178178        0        0
SELECT SECTOR SPDR TR          SBI MATERIALS    81369Y100      386    11527 SH       DEFINED                 11527        0        0
SIMON PPTY GROUP INC NEW       COM              828806109     4652    36080 SH       DEFINED                 36080        0        0
SOUTHERN CO                    COM              842587107     9152   197734 SH       DEFINED                197734        0        0
SOUTHWESTERN ENERGY CO         COM              845467109      104     3246 SH       DEFINED                  3246        0        0
SPDR S&P 500 ETF TR            TR UNIT          78462F103    21299   169712 SH       DEFINED                169712        0        0
STANLEY BLACK & DECKER INC     COM              854502101     3712    54914 SH       DEFINED                 54914        0        0
STARBUCKS CORP                 COM              855244109      239     5203 SH       DEFINED                  5203        0        0
STERICYCLE INC                 COM              858912108      175     2252 SH       DEFINED                  2252        0        0
STRYKER CORP                   COM              863667101     4424    88992 SH       DEFINED                 88992        0        0
SYSCO CORP                     COM              871829107       53     1842 SH       DEFINED                  1842        0        0
TEREX CORP NEW                 COM              880779103      856    63385 SH       DEFINED                 63385        0        0
TEVA PHARMACEUTICAL INDS LTD   ADR              881624209     8831   218802 SH       DEFINED                218802        0        0
TEXAS INSTRS INC               COM              882508104      200     6884 SH       DEFINED                  6884        0        0
THERMO FISHER SCIENTIFIC INC   COM              883556102     8582   190828 SH       DEFINED                190828        0        0
TIME WARNER CABLE INC          COM              88732J207      161     2536 SH       DEFINED                  2536        0        0
TIME WARNER INC                COM NEW          887317303     4509   124775 SH       DEFINED                124775        0        0
TJX COS INC NEW                COM              872540109    19743   305850 SH       DEFINED                305850        0        0
TRANSITION THERAPEUTICS INC    COM NEW          893716209       84    61200 SH       DEFINED                 61200        0        0
ULTA SALON COSMETCS & FRAG I   COM              90384S303     3646    56166 SH       DEFINED                 56166        0        0
UNITED PARCEL SERVICE INC      CL B             911312106      298     4071 SH       DEFINED                  4071        0        0
UNITED TECHNOLOGIES CORP       COM              913017109    10928   149516 SH       DEFINED                149516        0        0
UNITEDHEALTH GROUP INC         COM              91324P102      126     2489 SH       DEFINED                  2489        0        0
US BANCORP DEL                 COM NEW          902973304    23093   853720 SH       DEFINED                853720        0        0
V F CORP                       COM              918204108     6118    48177 SH       DEFINED                 48177        0        0
VERIZON COMMUNICATIONS INC     COM              92343V104    17998   448604 SH       DEFINED                448604        0        0
WAL MART STORES INC            COM              931142103    19428   325102 SH       DEFINED                325102        0        0
WALGREEN CO                    COM              931422109    13878   419772 SH       DEFINED                419772        0        0
WATERS CORP                    COM              941848103     3056    41273 SH       DEFINED                 41273        0        0
WEATHERFORD INT LT             CHF0.01          003883839     4212   287702 SH       DEFINED                287702        0        0
WEBMD HEALTH CORP              COM              94770V102     3217    85669 SH       DEFINED                 85669        0        0
WELLS FARGO & CO NEW           COM              949746101     4181   151731 SH       DEFINED                151731        0        0
WHOLE FOODS MKT INC            COM              966837106      170     2447 SH       DEFINED                  2447        0        0