| Official |
|---|
| 1.4 | If Only You Knew | 4:50 | Patti LaBelle | I’m in Love Again | Patti LaBelle | Album | | Philadelphia International Records | FZ 38539 |
| 1.3 | If You Only Knew | 4:45 | Patti LaBelle | Slow Jams: Timeless Collection, Volume 2 | Various Artists | Album + Compilation | | The Right Stuff | 29140 |
| 1.3 | If You Only Knew | 4:45 | Patti La Belle | Slow Jams: The Timeless Collection, Volume 2 | Various Artists | Album + Compilation | | The Right Stuff | T2-29140 |
| 1.10 | If Only You Knew | 4:46 | Patti LaBelle | Smooth Grooves: A Sensual Collection, Volume 1 | Various Artists | Album + Compilation | | Sony Music Special Products | R2 71859/A25340 |
| 1.6 | If Only You Knew | 4:49 | Patti LaBelle | Greatest Hits | Patti LaBelle | Album + Compilation | | MCA Records | MCAD-11567 |
| 1.11 | If Only You Knew | 4:48 | Patti LaBelle | The Hit Collection | Various Artists | Album + Compilation | | Disky | DC 880472 |
| 1.13 | If Only You Knew | 4:45 | Patti LaBelle | The Spirit's in It / I'm in Love Again / Patti | Patti LaBelle | Album + Compilation | | Westside | WESD 209 |
| 1.13 | If Only You Knew | 4:47 | Patti LaBelle | Ultimate Divas | Various Artists | Album + Compilation | | Arista | 07822-19066-2 |
| 1.14 | If Only You Knew | 4:47 | Patti LaBelle | Ultimate Divas | Various Artists | Album + Compilation | | | |
| 1.2 | If Only You Knew | 4:48 | Patti LaBelle | Body + Soul: Sweet Seduction | Various Artists | Album + Compilation | | Time–Life Music | m18515 314545937-2 |
| 2.1 | If Only You Knew | 4:50 | Patti LaBelle | Anthology | Patti LaBelle | Album + Compilation | | The Right Stuff | 72435-77962-2-4 |
| 2.4 | If Only You Knew | 4:48 | Patti LaBelle | Classic Soul Ballads: Sweet Thing | Various Artists | Album + Compilation | | Time–Life Music, Universal Music Special Markets | 19980-2, B000346202 |
| 1.10 | If Only You Knew | 4:49 | Patti LaBelle | Gold | Patti LaBelle | Album + Compilation | | Hip‐O Records | B0004118-02 |
| 2.4 | If Only You Knew | 4:48 | Patti LaBelle | Classic Soul Ballads: Sweet Thing | Various Artists | Album + Compilation | | Time–Life Music | 19980-2 |
| 1.16 | If Only You Knew | 4:45 | Patti LaBelle | The Sound of Philadelphia: Gamble & Huff's Greatest Hits | Various Artists | Album + Compilation | | Philadelphia International Records | 88697210872 |
| 1.14 | If Only You Knew | 4:45 | Patti LaBelle | The Sound Of Philadelphia: Gamble & Huff’s Greatest Hits | Various Artists | Album + Compilation | | Philadelphia International Records | |
| 4.17 | If Only You Knew | 4:45 | Patti LaBelle | Love Train: The Sound of Philadelphia | Various Artists | Album + Compilation | | Legacy | 88697 35279 2, 88697352792 |
| 1.1 | If Only You Knew | 4:48 | Patti LaBelle | The Essential Patti LaBelle | Patti LaBelle | Album + Compilation | | Legacy , Philadelphia International Records | 88697 21082 2 |
| 1.9 | If Only You Knew | 4:45 | Patti LaBelle | Love’basic | Various Artists | Album + Compilation | | | |
| 1.3 | If Only You Knew | 4:48 | Patti LaBelle | Playlist: The Very Best of Patti LaBelle | Patti LaBelle | Album + Compilation | | Legacy | 88875-15071-2 |
| 10.13 | If Only You Knew | 4:46 | Patti LaBelle | Philadelphia International Records: The 40th Anniversary Box Set | Various Artists | Album + Compilation | | Harmless | HURTBOX001 |
| 20.4 | If Only You Knew | 4:49 | Patti LaBelle | Philadelphia International Records: The Collection | Various Artists | Album + Compilation | | Philadelphia International Records, Sony Music | 88843055662 |
| 1.4 | If Only You Knew | 4:48 | Patti LaBelle | I’m in Love Again | Patti LaBelle | Album | | Funky Town Grooves | FTG-420 |
| 1.12 | If Only You Knew | 4:45 | Patti LaBelle | Tell It to My Heart | Various Artists | Album + Compilation | | Reader’s Digest | 88697092292 |
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