The soundtrack O BROTHER, WHERE ART THOU? has sold 8,710,000 copies in Australia, Canada, United Kingdom and United States.
O BROTHER, WHERE ART THOU? certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Australia |
35,000 | 1x Gold | APRIL 2002 |
Australia Sales: 35,000
Certification / note: 1x Gold
Certification Date / sales as of: APRIL 2002
|
 Canada |
400,000 | 4x Platinum | 2002 |
Canada Sales: 400,000
Certification / note: 4x Platinum
Certification Date / sales as of: 2002
|
 United Kingdom |
100,000 | 1x Gold | 7 December, 2001 |
United Kingdom Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 7 December, 2001
|
 United States |
8,175,000 | 8x Platinum | 10 October, 2007 |
United States Sales: 8,175,000
Certification / note: 8x Platinum
Certification Date / sales as of: 10 October, 2007
|
| Total sales | 8,710,000 | (in 4 countries) |
Total
Sales: 8,710,000
(in 4 countries)
|
Year-end chart performance for O BROTHER, WHERE ART THOU?
| Chart 2001 | Rank | Sales |
| Canadian Albums (SoundScan) |
31 | |
| US Albums (Billboard 200) |
23 | |
| US Albums (Soundscan) |
9 | 3,460,000 |
 Worldwide Albums (IFPI Global Music Report) |
16 | |
| Chart 2002 | Rank | Sales |
| Canadian Albums (SoundScan) |
19 | |
| US Albums (Billboard 200) |
6 | |
| US Albums (Soundscan) |
10 | 2,736,049 |
Decade-end chart performance for O BROTHER, WHERE ART THOU?
| Chart 2000's | Rank | Sales |
| US Albums (Billboard 200) |
20 | |
| US Albums (Soundscan) |
12 | 7,517,000 |