Most Appearances (Performer)
| Name | Role(s) | # |
|---|---|---|
| 554. Omara Portuondo | Featured Artist | 1 |
| 554. Omari Forman | Trumpet | 1 |
| 554. Omri Skop | Guitar, Vocals | 1 |
| 554. Onome Edgeworth | Percussion | 1 |
| 554. Opal Hoyt | Vocals | 1 |
| 554. Open Mike Eagle | Sampler, Vocals | 1 |
| 554. Or Bareket | Bass | 1 |
| 554. Orestes Gómez | Percussion | 1 |
| 554. Oriana Aravena | Guitar | 1 |
| 554. Orla Gartland | Floor Tom, Guitar, Piano, Vocals | 1 |
| 554. Orlando Aispuro | Bajo Sexto, Guitars, Keys, Video | 1 |
| 554. Orlando Brinn | Keyboard | 1 |
| 554. Orlando Wells | Viola | 1 |
| 554. Orlando Wright | Bass | 1 |
| 554. Orowo "Roy" Ubiene | Keys | 1 |
| 554. Orowo Ubiene | Keys | 1 |
| 554. Osagyefo Sekou | Vocals | 1 |
| 554. Oscar Barrul | Palms, Vocals | 1 |
| 554. Oscar Convers | Bass | 1 |
| 554. Oscar Perez | Piano | 1 |
| 554. Oscar Ruiz. | Musician | 1 |
| 554. Oscar Trujillo | Background Vocals, Cello | 1 |
| 554. Osiris 'OTG' Wilson | DJ, Percussion, Vocals | 1 |
| 554. Osvaldo Fleites | Percussion, Trumpet | 1 |
| 554. Other Lives | Featured Artist | 1 |