| Official |
|---|
| 1.1 | Unforgettable | 3:29 | Nat King Cole | Super Now | |
| 1.43 | Unforgettable | 3:26 | Nat King Cole | Pop Ballads | |
| 11.26 | Unforgettable | 3:26 | Nat King Cole | L-O-V-E (The Complete Capitol Recordings 1960-1964) | |
| 4.6 | Unforgettable | 3:26 | Nat King Cole | L-O-V-E (The Complete Capitol Recordings 1960-1964) | |
| 2.4 | Unforgettable | 3:26 | Nat King Cole | Lemon Popsicles and Strawberry Milkshakes: Love Songs 2 | |
| 1.7 | Unforgettable | 3:26 | Nat King Cole | Joyeux Noël - Merry Christmas | |
| 1.17 | Unforgettable | 3:26 | Nat King Cole | Smooth Love Songs | - 2018-02-02 IE
- 2018-02-02 GB
|
| Promotion |
|---|
| 1.15 | Unforgettable | 3:27 | Nat King Cole | Rest Your Mind to the Music | |
