Auliʻi Cravalho as Ariel

Edie McClurg as Carlotta (voice)

Amber Riley as "Daughters of Triton" Emcee

Queen Latifah as Ursula

Jodi Benson as Herself / Ariel / Vanessa (voice)

Pat Carroll as Ursula (voice)

Graham Phillips as Prince Eric

Kenneth Mars as King Triton (voice)

John Stamos as Chef Louis

Buddy Hackett as Scuttle (voice)

Shaggy as Sebastian

Christopher Daniel Barnes as Prince Eric (voice)

Paddi Edwards as Flotsam and Jetsam (voice)

Samuel E. Wright as Sebastian (voice)

Will Ryan as Herald (voice)

Ben Wright as Grimsby (voice)

Jason Marin as Flounder (voice)

Jessica Rotter as Chorus (voice)