The soundtrack THANK GOD IT'S FRIDAY has sold 1,175,000 copies in Canada, New Zealand, United Kingdom and United States.
THANK GOD IT'S FRIDAY certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
100,000 | 1x Platinum | 1978 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1978
|
 New Zealand |
15,000 | 1x Platinum |
New Zealand Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 United Kingdom |
60,000 | 1x Silver | 3 August, 1978 |
United Kingdom Sales: 60,000
Certification / note: 1x Silver
Certification Date / sales as of: 3 August, 1978
|
 United States |
1,000,000 | 1x Platinum | 8 June, 1978 |
United States Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 8 June, 1978
|
| Total sales | 1,175,000 | (in 4 countries) |
Total
Sales: 1,175,000
(in 4 countries)
|
Year-end chart performance for THANK GOD IT'S FRIDAY
| Chart 1978 | Rank |
| Canadian Albums (RPM) |
32 |
 Dutch Albums (Album Top 100) |
95 |
| New Zealand Albums (RMNZ) |
28 |
| US Albums (Billboard 200) |
60 |