 Jacob TremblayLuca Paguro (voice) | Luca Paguro (voice) |
 Jack Dylan GrazerAlberto Scorfano (voice) | Alberto Scorfano (voice) |
 Emma BermanGiulia Marcovaldo (voice) | Giulia Marcovaldo (voice) |
 Saverio RaimondoErcole Visconti (voice) | Ercole Visconti (voice) |
 Maya RudolphDaniela Paguro (voice) | Daniela Paguro (voice) |
 Marco BarricelliMassimo Marcovaldo (voice) | Massimo Marcovaldo (voice) |
 Jim GaffiganLorenzo Paguro (voice) | Lorenzo Paguro (voice) |
 Peter SohnCiccio (voice) | Ciccio (voice) |
| LLorenzo CrisciGuido (voice) | Guido (voice) |
 Marina MassironiSignora Marsigliese (voice) | Signora Marsigliese (voice) |
 Gino La MonicaTomasso (Old Fisherman) (voice) | Tomasso (Old Fisherman) (voice) |
 Sandy MartinGrandma Paguro (voice) | Grandma Paguro (voice) |
 Giacomo GianniottiGiacomo (Young Fisherman) (voice) | Giacomo (Young Fisherman) (voice) |
 Elisa GabrielliConcetta Aragosta (voice) | Concetta Aragosta (voice) |
| MMimi MaynardPinuccia Aragosta (voice) | Pinuccia Aragosta (voice) |
 Sacha Baron CohenUncle Ugo (voice) | Uncle Ugo (voice) |
 Francesca FantiMaggiore (Cop) (voice) | Maggiore (Cop) (voice) |
 Jonathan Nichols-NavarroPriest (voice) | Priest (voice) |
 Enrico CasarosaCard Player / Angry Fisherman (voice) | Card Player / Angry Fisherman (voice) |
 Jim PirriMr. Branzino (voice) | Mr. Branzino (voice) |
| AArturo SorinoAdditional Voices (voice) | Additional Voices (voice) |
