| Blue | Purple | |
| Ariel | Sydney H | Jade |
| Eric | Dylan | Xavier |
| Ursula | Kara | Lee |
| Sebastian | Gannon | Zach |
| Flounder | Regan | Emma S |
| Scuttle | Addy | Alina |
| Grimsby | Theo | Jonah |
| King Triton | Kai | Pierce |
| Flotsam | Jenna | Lainey |
| Jetsam | Kenedee | Nora |
| Chef Louis/Ensemble | Landon | John |
| Pilot/Ensemble | Anaiety | Braydon |
| Carlotta/Ensemble | Tori | Brenna |
| Seahorse/Ensemble | Micah | TBA |
| Aquata/Ensemble | Alisia | Rose |
| Andrina/Ensemble | Jules | Sydney R |
| Arista/Ensemble | Jasmine | TBA |
| Atina/Ensemble | Paige | Emma P |
| Adella/Ensemble | Adalynn | Emily |
| Allana/Ensemble | Grace | Hazel |
| Ensemble | Ayla | |
| Callum |
The Little Mermaid JR Cast 2024