GREATEST HITS by OLIVIA NEWTON-JOHN has sold 2,373,810 copies in Canada, Hong Kong, Japan, United Kingdom and United States.
GREATEST HITS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
100,000 | 1x Platinum | 1977 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1977
|
 Hong Kong |
10,000 | 1x Gold |
Hong Kong Sales: 10,000
Certification / note: 1x Gold
Certification Date / sales as of:
|
|
 Japan |
163,810 | Oricon charts |
Japan Sales: 163,810
Certification / note: Oricon charts
Certification Date / sales as of:
|
|
 United Kingdom |
100,000 | 1x Gold | 1 December, 1977 |
United Kingdom Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 1 December, 1977
|
 United States |
2,000,000 | 2x Platinum | 12 October, 1984 |
United States Sales: 2,000,000
Certification / note: 2x Platinum
Certification Date / sales as of: 12 October, 1984
|
| Total sales | 2,373,810 | (in 5 countries) |
Total
Sales: 2,373,810
(in 5 countries)
|
Year-end chart performance for GREATEST HITS
| Chart 1978 | Rank | Sales |
| Canadian Albums (RPM) |
76 | |
| Japanese Albums (Oricon) |
32 | 121,000 |
 New Zealand Albums (RMNZ) |
44 |