According to Allmusic (as of 1966), the soundtrack MY FAIR LADY (ORIGINAL CAST) has sold 6,000,000 copies worldwide. The album sold best in United States (3,000,000 copies), United Kingdom (100,000 copies) and (0 copies).
MY FAIR LADY (ORIGINAL CAST) certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 United Kingdom |
100,000 | 1x Gold | 13 November, 1987 |
United Kingdom Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 13 November, 1987
|
 United States |
3,000,000 | 3x Platinum | 21 November, 1986 |
United States Sales: 3,000,000
Certification / note: 3x Platinum
Certification Date / sales as of: 21 November, 1986
|
| Worldwide sales | 6,000,000 | Allmusic (as of 1966) |
Total
Sales: 6,000,000
Source: Allmusic (as of 1966)
|
Decade-end chart performance for MY FAIR LADY (ORIGINAL CAST)
| Chart 1950's | Rank |
| UK Albums (Official Charts) |
2 |