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

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: March 31, 2012

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     May 02, 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:    $1,069,484 (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    18741   210078 SH       DEFINED                210078        0        0
ABBOTT LABS                    COM              002824100     2337    38146 SH       DEFINED                 38146        0        0
ADOBE SYS INC                  COM              00724F101      140     4081 SH       DEFINED                  4081        0        0
AFFILIATED MANAGERS GROUP      COM              008252108      181     1620 SH       DEFINED                  1620        0        0
AFLAC INC                      COM              001055102       47     1029 SH       DEFINED                  1029        0        0
AMARIN CORP PLC                SPONS ADR NEW    023111206      102     9000 SH       DEFINED                  9000        0        0
AMAZON COM INC                 COM              023135106      148      731 SH       DEFINED                   731        0        0
AMER TOWER CORP                COM NEW USD0.01  029912201     2825    44833 SH       DEFINED                 44833        0        0
AMERICAN EXPRESS CO            COM              025816109      213     3674 SH       DEFINED                  3674        0        0
AMGEN INC                      COM              031162100      148     2179 SH       DEFINED                  2179        0        0
ANADARKO PETE CORP             COM              032511107     5401    68939 SH       DEFINED                 68939        0        0
AON CORP                       COM              037389103      511    10421 SH       DEFINED                 10421        0        0
APACHE CORP                    COM              037411105     4654    46336 SH       DEFINED                 46336        0        0
APPLE INC                      COM              037833100    29766    49648 SH       DEFINED                 49648        0        0
AT&T INC                       COM              00206R102    12588   403068 SH       DEFINED                403068        0        0
AVON PRODS INC                 COM              054303102       82     4251 SH       DEFINED                  4251        0        0
BANK OF AMERICA CORPORATION    COM              060505104     1893   197845 SH       DEFINED                197845        0        0
BAXTER INTL INC                COM              071813109     6205   103796 SH       DEFINED                103796        0        0
BERKSHIRE HATHAWAY INC DEL     CL B NEW         084670702      468     5768 SH       DEFINED                  5768        0        0
BLACKSTONE GROUP L P           COM UNIT LTD     09253U108      144     9021 SH       DEFINED                  9021        0        0
BOEING CO                      COM              097023105      124     1662 SH       DEFINED                  1662        0        0
BP PLC                         SPONSORED ADR    055622104       13      303 SH       DEFINED                   303        0        0
BRISTOL MYERS SQUIBB CO        COM              110122108       34     1036 SH       DEFINED                  1036        0        0
C H ROBINSON WORLDWIDE INC     COM NEW          12541W209     8692   132719 SH       DEFINED                132719        0        0
CARDINAL HEALTH INC            COM              14149Y108     8482   196744 SH       DEFINED                196744        0        0
CATERPILLAR INC DEL            COM              149123101     1786    16766 SH       DEFINED                 16766        0        0
CHEVRON CORP NEW               COM              166764100    36574   341139 SH       DEFINED                341139        0        0
CHIPOTLE MEXICAN GRILL INC     COM              169656105     4841    11582 SH       DEFINED                 11582        0        0
CISCO SYS INC                  COM              17275R102    11917   563456 SH       DEFINED                563456        0        0
CITIGROUP INC                  COM NEW          172967424     9757   266953 SH       DEFINED                266953        0        0
CITRIX SYS INC                 COM              177376100      152     1929 SH       DEFINED                  1929        0        0
COCA COLA CO                   COM              191216100     5105    68975 SH       DEFINED                 68975        0        0
COLGATE PALMOLIVE CO           COM              194162103     6100    62387 SH       DEFINED                 62387        0        0
CONOCOPHILLIPS                 COM              20825C104      990    13024 SH       DEFINED                 13024        0        0
COOPER INDS PLC                COM USD0.01      00B40K911      417     6522 SH       DEFINED                  6522        0        0
COVIDIEN PLC                   USD0.20(POST CON)00B68SQD2    11112   203227 SH       DEFINED                203227        0        0
CROWN HOLDINGS INC             COM              228368106     1751    47550 SH       DEFINED                 47550        0        0
DEERE & CO                     COM              244199105     1613    19942 SH       DEFINED                 19942        0        0
DEVRY INC DEL                  COM              251893103     1550    45766 SH       DEFINED                 45766        0        0
DISNEY WALT CO                 COM DISNEY       254687106    13580   310176 SH       DEFINED                310176        0        0
DOLLAR TREE INC                COM              256746108    14527   153746 SH       DEFINED                153746        0        0
E M C CORP MASS                COM              268648102      144     4811 SH       DEFINED                  4811        0        0
EBAY INC                       COM              278642103      238     6437 SH       DEFINED                  6437        0        0
EMERSON ELEC CO                COM              291011104    21186   406023 SH       DEFINED                406023        0        0
EXELON CORP                    COM              30161N101     3852    98233 SH       DEFINED                 98233        0        0
EXXON MOBIL CORP               COM              30231G102    41036   473183 SH       DEFINED                473183        0        0
FEDEX CORP                     COM              31428X106      184     1997 SH       DEFINED                  1997        0        0
FIRST HORIZON NATL CORP        COM              320517105       97     9333 SH       DEFINED                  9333        0        0
FLUOR CORP NEW                 COM              343412102      127     2118 SH       DEFINED                  2118        0        0
FREEPORT-MCMORAN COPPER & GO   COM              35671D857       91     2395 SH       DEFINED                  2395        0        0
GENERAL ELECTRIC CO            COM              369604103    14654   730147 SH       DEFINED                730147        0        0
GENERAL MLS INC                COM              370334104    14072   356696 SH       DEFINED                356696        0        0
GILEAD SCIENCES INC            COM              375558103    15884   325084 SH       DEFINED                325084        0        0
GLAXOSMITHKLINE PLC            SPONSORED ADR    37733W105       60     1320 SH       DEFINED                  1320        0        0
GOLDMAN SACHS GROUP INC        COM              38141G104     1915    15398 SH       DEFINED                 15398        0        0
GOOGLE INC                     CL A             38259P508    26908    41962 SH       DEFINED                 41962        0        0
GREENHILL & CO INC             COM              395259104     2160    49504 SH       DEFINED                 49504        0        0
HARLEY DAVIDSON INC            COM              412822108     7542   153675 SH       DEFINED                153675        0        0
HEINZ H J CO                   COM              423074103       25      477 SH       DEFINED                   477        0        0
HEWLETT PACKARD CO             COM              428236103     1546    64856 SH       DEFINED                 64856        0        0
HOME DEPOT INC                 COM              437076102      184     3660 SH       DEFINED                  3660        0        0
HONEYWELL INTL INC             COM              438516106      274     4507 SH       DEFINED                  4507        0        0
ILLINOIS TOOL WKS INC          COM              452308109     3269    57223 SH       DEFINED                 57223        0        0
INTEL CORP                     COM              458140100    15195   540438 SH       DEFINED                540438        0        0
INTERCONTINENTALEXCHANGE INC   COM              45865V100     7207    52443 SH       DEFINED                 52443        0        0
INTERNATIONAL BUSINESS MACHS   COM              459200101    39955   191493 SH       DEFINED                191493        0        0
INTL PAPER CO                  COM              460146103       21      600 SH       DEFINED                   600        0        0
ISHARES INC                    MSCI CDA INDEX   464286509    50739  1790358 SH       DEFINED               1790358        0        0
JOHNSON & JOHNSON              COM              478160104    26233   397723 SH       DEFINED                397723        0        0
JPMORGAN CHASE & CO            COM              46625H100    36767   799635 SH       DEFINED                799635        0        0
KELLOGG CO                     COM              487836108      427     7970 SH       DEFINED                  7970        0        0
KRAFT FOODS INC                CL A             50075N104     5439   143123 SH       DEFINED                143123        0        0
LANDSTAR SYS INC               COM              515098101     3710    64269 SH       DEFINED                 64269        0        0
LINCOLN NATL CORP IND          COM              534187109      575    21816 SH       DEFINED                 21816        0        0
LOCKHEED MARTIN CORP           COM              539830109    10082   112197 SH       DEFINED                112197        0        0
MARKET VECTORS ETF TR          GOLD MINER ETF   57060U100     6475   130693 SH       DEFINED                130693        0        0
MARKWEST ENERGY PARTNERS L P   UNIT LTD PARTN   570759100       22      375 SH       DEFINED                   375        0        0
MARSH & MCLENNAN COS INC       COM              571748102    13483   411183 SH       DEFINED                411183        0        0
MCDONALDS CORP                 COM              580135101    14551   148328 SH       DEFINED                148328        0        0
MEAD JOHNSON NUTRITION CO      COM              582839106     8002    97019 SH       DEFINED                 97019        0        0
MEDNAX INC                     COM              58502B106     3805    51163 SH       DEFINED                 51163        0        0
MERCK & CO INC NEW             COM              58933Y105    15915   414441 SH       DEFINED                414441        0        0
METLIFE INC                    COM              59156R108    21198   567546 SH       DEFINED                567546        0        0
MICROCHIP TECHNOLOGY INC       COM              595017104    10901   293035 SH       DEFINED                293035        0        0
MICROSOFT CORP                 COM              594918104    35775  1109145 SH       DEFINED               1109145        0        0
MONSANTO CO NEW                COM              61166W101     3983    49942 SH       DEFINED                 49942        0        0
NATIONAL OILWELL VARCO INC     COM              637071101    19640   247143 SH       DEFINED                247143        0        0
NEWELL RUBBERMAID INC          COM              651229106    13864   778414 SH       DEFINED                778414        0        0
NIKE INC                       CL B             654106103     8342    76929 SH       DEFINED                 76929        0        0
NOBLE CORP COM                 CHF3.28          003334731     1924    51336 SH       DEFINED                 51336        0        0
NORFOLK SOUTHERN CORP          COM              655844108     2428    36881 SH       DEFINED                 36881        0        0
NORTHERN TR CORP               COM              665859104     7172   151145 SH       DEFINED                151145        0        0
OCCIDENTAL PETE CORP DEL       COM              674599105      167     1751 SH       DEFINED                  1751        0        0
OMNICOM GROUP INC              COM              681919106      194     3836 SH       DEFINED                  3836        0        0
ORACLE CORP                    COM              68389X105    26224   899303 SH       DEFINED                899303        0        0
ORASURE TECHNOLOGIES INC       COM              68554V108      299    35000 SH       DEFINED                 35000        0        0
PEPSICO INC                    COM              713448108     7312   110201 SH       DEFINED                110201        0        0
PFIZER INC                     COM              717081103     5268   232624 SH       DEFINED                232624        0        0
PHILIP MORRIS INTL INC         COM              718172109    33408   377024 SH       DEFINED                377024        0        0
POOL CORPORATION               COM              73278L105     6448   172321 SH       DEFINED                172321        0        0
PROCTER & GAMBLE CO            COM              742718109    25099   373444 SH       DEFINED                373444        0        0
PRUDENTIAL FINL INC            COM              744320102      159     2516 SH       DEFINED                  2516        0        0
PUBLIC SVC ENTERPRISE GROUP    COM              744573106     3563   116400 SH       DEFINED                116400        0        0
QUALCOMM INC                   COM              747525103      195     2861 SH       DEFINED                  2861        0        0
ROCKWELL AUTOMATION INC        COM              773903109      188     2355 SH       DEFINED                  2355        0        0
ROPER INDS INC NEW             COM              776696106      217     2185 SH       DEFINED                  2185        0        0
SCHEIN HENRY INC               COM              806407102      491     6489 SH       DEFINED                  6489        0        0
SCHLUMBERGER LTD               COM              806857108      727    10396 SH       DEFINED                 10396        0        0
SELECT SECTOR SPDR TR          SBI INT-FINL     81369Y605       61     3874 SH       DEFINED                  3874        0        0
SELECT SECTOR SPDR TR          SBI INT-UTILS    81369Y886     6261   178660 SH       DEFINED                178660        0        0
SELECT SECTOR SPDR TR          SBI MATERIALS    81369Y100      426    11527 SH       DEFINED                 11527        0        0
SIMON PPTY GROUP INC NEW       COM              828806109     5226    35875 SH       DEFINED                 35875        0        0
SOUTHERN CO                    COM              842587107     5111   113762 SH       DEFINED                113762        0        0
SOUTHWESTERN ENERGY CO         COM              845467109       99     3246 SH       DEFINED                  3246        0        0
SPDR S&P 500 ETF TR            TR UNIT          78462F103    20121   142894 SH       DEFINED                142894        0        0
STANLEY BLACK & DECKER INC     COM              854502101     4122    53555 SH       DEFINED                 53555        0        0
STARBUCKS CORP                 COM              855244109      291     5203 SH       DEFINED                  5203        0        0
STERICYCLE INC                 COM              858912108      188     2252 SH       DEFINED                  2252        0        0
STRYKER CORP                   COM              863667101     4133    74490 SH       DEFINED                 74490        0        0
SYSCO CORP                     COM              871829107       54     1842 SH       DEFINED                  1842        0        0
TEREX CORP NEW                 COM              880779103     1208    53694 SH       DEFINED                 53694        0        0
TEVA PHARMACEUTICAL INDS LTD   ADR              881624209    11084   245990 SH       DEFINED                245990        0        0
TEXAS INSTRS INC               COM              882508104      231     6884 SH       DEFINED                  6884        0        0
THERMO FISHER SCIENTIFIC INC   COM              883556102    13203   234181 SH       DEFINED                234181        0        0
TIME WARNER CABLE INC          COM              88732J207      207     2536 SH       DEFINED                  2536        0        0
TIME WARNER INC                COM NEW          887317303     4519   119702 SH       DEFINED                119702        0        0
TJX COS INC NEW                COM              872540109    22549   567838 SH       DEFINED                567838        0        0
TRANSITION THERAPEUTICS INC    COM NEW          893716209      130    71200 SH       DEFINED                 71200        0        0
ULTA SALON COSMETCS & FRAG I   COM              90384S303     4282    46094 SH       DEFINED                 46094        0        0
UNITED PARCEL SERVICE INC      CL B             911312106      210     2603 SH       DEFINED                  2603        0        0
UNITED TECHNOLOGIES CORP       COM              913017109    11919   143705 SH       DEFINED                143705        0        0
UNITEDHEALTH GROUP INC         COM              91324P102      147     2489 SH       DEFINED                  2489        0        0
US BANCORP DEL                 COM NEW          902973304    27609   871504 SH       DEFINED                871504        0        0
V F CORP                       COM              918204108     5877    40262 SH       DEFINED                 40262        0        0
VANGUARD WORLD FDS             INF TECH ETF     92204A702       33      450 SH       DEFINED                   450        0        0
VERIFONE SYS INC               COM              92342Y109     3498    67432 SH       DEFINED                 67432        0        0
VERIZON COMMUNICATIONS INC     COM              92343V104     4366   114196 SH       DEFINED                114196        0        0
VISA INC                       COM CL A         92826C839      129     1092 SH       DEFINED                  1092        0        0
WAL MART STORES INC            COM              931142103    18014   294347 SH       DEFINED                294347        0        0
WALGREEN CO                    COM              931422109     9235   275765 SH       DEFINED                275765        0        0
WEATHERFORD INT LT             CHF0.01          003883839     3563   236091 SH       DEFINED                236091        0        0
WEBMD HEALTH CORP              COM              94770V102     1811    70784 SH       DEFINED                 70784        0        0
WELLS FARGO & CO NEW           COM              949746101     4415   129322 SH       DEFINED                129322        0        0
WHOLE FOODS MKT INC            COM              966837106      204     2447 SH       DEFINED                  2447        0        0