| Official |
|---|
| 1.9 | If You Don’t Know Me by Now | 3:31 | Harold Melvin & The Blue Notes | Nostalgic Love | Various Artists | Album + Compilation | | Retro Music | CAM99802 |
| 1.3 | If You Don’t Know Me by Now | 3:35 | Harold Melvin & The Blue Notes | Sensational 70s | Various Artists | Album + Compilation | | Madacy Special Products | MSP2 5531 |
| 3.10 | If You Don’t Know Me by Now | 3:35 | Harold Melvin & The Blue Notes | Rock n’ Roll of the ’70s | Various Artists | Album + Compilation | | Madacy Special Products | BFP2 5936, BFP2 5937, BFP2 5938, BFP2 5939 |
| 3.6 | If You Don’t Know Me by Now (re-recording) | 3:31 | Harold Melvin & The Blue Notes | 120% Soul | Various Artists | Album + Compilation | | Weton-Wesgram | KBOX601 |
| 10.4 | If You Don’t Know Me by Now (re-recording) | 3:33 | Harold Melvin & The Blue Notes | 200 Tracks From the Super Seventies | Various Artists | Album + Compilation | | Charly Records, Weton-Wesgram | DOM1022 |
| 1.12 | If You Don’t Know Me by Now | 3:34 | Harold Melvin & The Blue Notes | 70s Super Big Box | Various Artists | Album + Compilation | | Ganser & Hanke Media | 778 936-2, 778 937-2, 778 938-2 |
