According to Universal Music Canada, A NIGHT AT THE OPERA by QUEEN has sold 6,000,000 copies worldwide. The album sold best in United States (3,000,000 copies), Germany (500,000 copies) and United Kingdom (300,000 copies).
A NIGHT AT THE OPERA certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Argentina |
120,000 | 1x Platinum + 1x Platinum | 1 August, 1987 |
Argentina Sales: 120,000
Certification / note: 1x Platinum + 1x Platinum
Certification Date / sales as of: 1 August, 1987
|
 Austria |
25,000 | 1x Gold | 20 January, 1993 |
Austria Sales: 25,000
Certification / note: 1x Gold
Certification Date / sales as of: 20 January, 1993
|
 Canada |
100,000 | 1x Platinum | 1976 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1976
|
 Denmark |
20,000 | 1x Platinum | 18 April, 2023 |
Denmark Sales: 20,000
Certification / note: 1x Platinum
Certification Date / sales as of: 18 April, 2023
|
 Finland |
20,000 | IFPI Finland |
Finland Sales: 20,000
Certification / note: IFPI Finland
Certification Date / sales as of:
|
|
 Germany |
500,000 | 1x Platinum | 1993 |
Germany Sales: 500,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1993
|
 Italy |
50,000 | 1x Platinum (Sales since 2009) | 2021 |
Italy Sales: 50,000
Certification / note: 1x Platinum (Sales since 2009)
Certification Date / sales as of: 2021
|
 Japan |
250,000 | 1x Platinum | May 2021 |
Japan Sales: 250,000
Certification / note: 1x Platinum
Certification Date / sales as of: May 2021
|
 Poland |
40,000 | 2x Platinum | 2009 |
Poland Sales: 40,000
Certification / note: 2x Platinum
Certification Date / sales as of: 2009
|
 United Kingdom |
300,000 | 1x Platinum | 1 January,1976 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1 January,1976
|
 United States |
3,000,000 | 3x Platinum | 14 November, 2002 |
United States Sales: 3,000,000
Certification / note: 3x Platinum
Certification Date / sales as of: 14 November, 2002
|
| Worldwide sales | 6,000,000 | Universal Music Canada |
Total
Sales: 6,000,000
Source: Universal Music Canada
|
Year-end chart performance for A NIGHT AT THE OPERA
| Chart 1976 | Rank | Sales |
 Australian Albums (Kent Music Report) |
4 | |
| Canadian Albums (RPM) |
15 | |
 Dutch Albums (Album Top 100) |
5 | |
| German Albums (Offizielle Top 100) |
29 | |
| Japanese Albums (Oricon) |
22 | 125,000 |
 New Zealand Albums (RMNZ) |
3 | |
| UK Albums (Music Week) |
12 | |
| US Albums (Billboard 200) |
8 | |
| Chart 2019 | Rank | Sales |
 Belgian Albums (Ultratop Wallonia) |
172 | |
| Italian Albums (FIMI) |
84 | |
 Uruguayan Albums (CUD) |
6 |