The best selling catalog album in 2006 in United States was 16 BIGGEST HITS by JOHNNY CASH which sold 609,000 copies.
| Rank | Artist | Album | Sales | Released |
| 1 | JOHNNY CASH | 16 BIGGEST HITS | 609,000 | 1999 |
| 2 | DANE COOK | HARMFUL IF SWALLOWED | 551,000 | 2003 |
| 3 | MICHAEL BUBLÉ | MICHAEL BUBLÉ | 531,000 | 2003 |
| 4 | PINK FLOYD | DARK SIDE OF THE MOON | 506,000 | 1973 |
| 5 | TIM MCGRAW | GREATEST HITS VOL 1 | 499,000 | 2000 |
| 6 | BOB SEGER | GREATEST HITS | 490,000 | 1994 |
| 7 | THE BEATLES | 1 | 451,000 | 2000 |
| 8 | IL DIVO | THE CHRISTMAS COLLECTION | 444,000 | 2005 |
| 9 | AC/DC | BACK IN BLACK | 440,000 | 1980 |
| 10 | THE BEACH BOYS | SOUNDS OF SUMMER: THE VERY BEST OF THE BEACH BOYS | 385,000 | 2003 |
Source: Nielsen SoundScan