According to Universal Music Canada, The Who official site, TOMMY by THE WHO has sold 20,000,000 copies worldwide. The album sold best in United States (2,500,000 copies), France (100,000 copies) and United Kingdom (100,000 copies).
TOMMY certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 France |
100,000 | 1x Gold | 1977 |
France Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 1977
|
 Italy |
25,000 | 1x Gold (Sales since 2009) | 2016 |
Italy Sales: 25,000
Certification / note: 1x Gold (Sales since 2009)
Certification Date / sales as of: 2016
|
 United Kingdom |
100,000 | 1x Gold | 22 July, 2013 |
United Kingdom Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 22 July, 2013
|
 United States |
2,500,000 | 2x Platinum | 8 February, 1993 |
United States Sales: 2,500,000
Certification / note: 2x Platinum
Certification Date / sales as of: 8 February, 1993
|
| Worldwide sales | 20,000,000 | Universal Music Canada, The Who official site |
Total
Sales: 20,000,000
Source: Universal Music Canada, The Who official site
|