 | Halle Bailey als Ariel |
 | Jonah Hauer-King als Prince Eric |
 | Daveed Diggs als Sebastian (voice) |
 | Awkwafina als Scuttle (voice) |
 | Jacob Tremblay als Flounder (voice) |
 | Noma Dumezweni als Queen Selina |
 | Javier Bardem als King Triton |
 | Melissa McCarthy als Ursula |
 | Art Malik als Sir Grimsby |
 | Jessica Alexander als Vanessa |
 | Emily Coates als Rosa |
 | Jude Akuwudike als Joshua |
 | Russell Balogh als Triton Guard #1 |
 | Adrian Christopher als Triton Guard #2 |
 | Simone Ashley als Indira |
 | Martina Laird als Lashana |
 | John Dagleish als Mulligan |
 | Sienna King als Tamika |
 | Karolina Conchet als Mala |
 | Craig Stein als Dancer / Puppeteer |
 | Lorena Andrea als Perla |
 | Kajsa Mohammar als Karina |
 | Nathalie Sorrell als Caspia |
 | Jodi Benson als Market Vendor |
 | Christopher Fairbank als Hawkins |
| Colleen Atwood | Costume Design |
| Dion Beebe | Director of Photography |
| Adam Kirley | Stunt Coordinator |
| Adam Kirley | Second Unit Director |
| Michael Higham | Music Supervisor |
| Michael Higham | Music Producer |
| Alan Menken | Original Music Composer |
| Alan Menken | Songs |
| David Magee | Screenplay |
| Gordon Sim | Set Decoration |
| John Myhre | Production Design |
| Rob Marshall | Director |
| Rob Marshall | Producer |
| Jeffrey Silver | Executive Producer |
| Marc Platt | Producer |
| Howard Ashman | Lyricist |
| Elaine Kusmishko | Art Direction |
| Niall Moroney | Supervising Art Director |
| Lin-Manuel Miranda | Producer |
| Lin-Manuel Miranda | Lyricist |
| John DeLuca | Producer |
| Vicki Stevenson | Art Direction |
| Wyatt Smith | Editor |
| Christoph Roth | Visual Effects Producer |
| Simon Elsley | Art Direction |
| Mike Prestwood Smith | Sound Re-Recording Mixer |
| Tim Burke | Visual Effects Supervisor |
| Daniel Barrow | Visual Effects Producer |
| Renée Tondelli | Sound Supervisor |
| Gilbert Lake | Sound Re-Recording Mixer |
| Camille Friend | Hairstylist |
| Anita Burger | Hairstylist |
| Lauren Briggs-Miller | Art Direction |
| Sheena Wichary | Costume Supervisor |
| Michael Miller | ADR Mixer |
| Sophie Slotover | Makeup Artist |
| Ben Howarth | First Assistant Director |
| Lee Salevan | Sound Designer |
| Aidan Dykes | ADR Mixer |
| Kevin Timon Hill | Art Direction |
| Tilly Calder | Makeup Artist |
| James Hyde | ADR Mixer |
| John Sorapure | Second Unit Director |
| Natalie Abizadeh | Makeup Artist |
| Chelsea Body | Foley Mixer |
| Kat Ali | Makeup Artist |
| Sarah Gibble | Foley Supervisor |
| Carole Louise Machin | Set Costumer |
| Louise Young | Makeup Artist |
| Reetu Aggarwal | 3D Artist |
| Daniel Hazeltine | Visual Effects |
| Alexander T.H. Browne | VFX Artist |
| Prakash Goyal | VFX Artist |
| Katie Jones | Set Costumer |
| Chloe Dixon | Makeup Artist |
| Diana Samuila | Set Decoration |
