The best selling album in 2003 in Ireland was COME AWAY WITH ME by NORAH JONES.
| Rank | Artist | Album | Released |
| 1 | NORAH JONES | COME AWAY WITH ME | 2002 |
| 2 | DIDO | LIFE FOR RENT | 2003 |
| 3 | JUSTIN TIMBERLAKE | JUSTIFIED | 2002 |
| 4 | R.E.M. | IN TIME: THE BEST OF R.E.M. 1988-2003 | 2003 |
| 5 | CHRISTINA AGUILERA | STRIPPED | 2002 |
| 6 | NOW SERIES (UK) | NOW THAT'S WHAT I CALL MUSIC! 56 | 2003 |
| 7 | COLDPLAY | A RUSH OF BLOOD TO THE HEAD | 2002 |
| 8 | THE THRILLS | SO MUCH FOR THE CITY | 2003 |
| 9 | MICHAEL JACKSON | NUMBER ONES | 2003 |
| 10 | BEYONCÉ | DANGEROUSLY IN LOVE | 2003 |
| 11 | 50 CENT | GET RICH OR DIE TRYIN' | 2003 |
| 12 | WESTLIFE | TURNAROUND | 2003 |
| 13 | AVRIL LAVIGNE | LET GO | 2002 |
| 14 | RED HOT CHILI PEPPERS | GREATEST HITS | 2003 |
| 15 | THE WHITE STRIPES | ELEPHANT | 2003 |
| 16 | THE DARKNESS | PERMISSION TO LAND | 2003 |
| 17 | THE BEST...ALBUM IN THE WORLD...EVER! SERIES | BEST POWER BALLADS IN THE WORLD EVER | 2003 |
| 18 | U2 | THE BEST OF 1990 - 2000 | 2002 |
| 19 | RED HOT CHILI PEPPERS | BY THE WAY | 2002 |
| 20 | EMINEM | THE EMINEM SHOW | 2002 |
Source: IRMA