Caillou
(2000)| Acteur / Actrice | Karakter |
| Ellen David | Miss Martin |
| Annie Bovaird | Caillou |
| Tyler Brody Stein | Alan |
| Ryan Tilson | Leo |
| Vanessa Lengies | Boy |
| Cara Reynolds | |
| Dallas Jokic | Daniel |
| Graeme Jokic | Leo |
| Sofie Uretsky | Clementine |
| Bryn McAuley | Caillou |
| Jaclyn Linetsky | Caillou |
| Jennifer Seguin | Caillou's mom |
| Pat Fry | Caillou's dad |
| Brigid Tierney | Rosie; Clementine |
| Bob Stutt | Gilbert (English version) |
| Pier Paquette | Rexy (English version) |
| Matt Ficner | Teddy (English version) |
| Tim Gosley | Deidi (English version) |
| Marlee Shapiro | Storyteller |
| Diane Arcand | Grand-maman de Caillou (newer seasons) (French language version) |
| Madeleine Arsenault | Narrator (first few seasons) (French language version) |
| Charlotte Bernard | Dee-Dee (French language version) |
| Violette Chauveau | Mousseline (Rosie); Clementine (French language version) |
| Hugolin Chevrette-Landesque | Nounurs (French language version) |
| Claudia-Laurie Corbeil | Caillou (French language version) |
| Nathalie Coupal | Maman de Caillou (French language version) |
| Louis Philippe Dandenault | Rexy (newer seasons) |
| Mario Desmarais | Grand-papa de Caillou |
| Sophie Faucher | Grand-maman de Caillou (first few seasons), Narrator (French language version) |
| Holly G. Frankel | Julie (English language version) |
| Johanne Garneau | Leo (French language version) |
| Gilbert Lachance | Papa de Caillou; Rexy |
| Sophie Léger | Sarah (French language version) |
| Pauline Little | Grandma |
| George Morris | Grandpa |
| François Sasseville | Gilbert |
| Merlee Shapiro | Narrator |
| Claudie Verdant | Clementine's Mom (French language version) |
| Jesse Vinet | Rosie |