Trailer
Images
 | Ilan Debrabant as Nicolas |
 | Jean-Paul Rouve as Nicholas' father |
 | Audrey Lamy as Nicholas' mother |
 | Pierre Arditi as M. Moucheboume |
 | Grégory Gadebois as Le Bouillon |
 | Jean-Pierre Darroussin as Director |
 | Adeline D'Hermy as Mistress |
 | Noémie Lvovsky as Mrs. Bouillaguet |
 | François Morel as Mr. Blédurt, the neighbor |
 | Anton Alluin as Clotaire |
 | Oscar Boissière as Alceste |
 | Léandre Castellano-Lemoine as Agnan |
 | Malo Chanson-Demange as Rufus |
 | Simon Faliu as Geoffroy |
 | Malick Laugier as Eudes |
 | Léonard Signoret as Maixent |
 | Philippe Uchan as Grifaton |
 | Lise Lamétrie as Mémé |
 | Claudine Acs as The Widow Zinzin |
 | Catherine Davenier as Madame Moucheboume |
 | Sandie Masson as Madame Grifaton |
 | Matthieu Rozé as Museum guide |
 | Capucine Sainson-Fabresse as Marie-Edwige |
 | Juliette Gras as Marie-Edwige's girlfriend |
 | Hubert Myon as Colleague Duparc |
 | Gerald Cesbron as College of Nicholas' father |
 | Pierre Pirol as College of Nicholas' father |
 | Benoît Strulus as College of Nicholas' father |
 | Cesar Duminil as Visitor to the house of Petit Nicolas |
 | Claire Mechin as Mother of the visitor to the house of Petit Nicolas |
 | Arnaud Pfeiffer as Rufus' father |
 | Barbara Bolotner as Baker |
 | Julie Maes as Supervisor |
 | Guillaume Clémencin as Antique dealer |
 | François Rostain as Bearded salesman |
 | Dominique Langlais as Widow Zinzin's son |
 | Christophe Grundmann as The mover |
 | Antonin Maurel as Restaurant receptionist |
 | Jacques Ledran as Waiter |
 | Nicolas Audebaud as Substitute of Nicholas' father |
 | Leny Morand |
 | Jean-Claude Bohbote as Fishmonger |
 | Aleksandra Yermak as Mr. Moucheboume's secretary |
 | Ted Etienne as An Invincible Adult (1990) |
 | Thomas Grascoeur as An Invincible Adult (1990) |
 | Florian Maubert as An Invincible Adult (1990) |
 | Victor Bourigault as An Invincible Adult (1990) |
 | Anthony Henrot as An Invincible Adult (1990) |
 | Antonin Schopfer as An Invincible Adult (1990) |
 | Tom Neal as An Invincible Adult (1990) |
 | Paul Kaliszczak as An Invincible Adult (1990) |
| Diego Belet as Nicholas' classmate |
| Antonin Magret as Nicholas' classmate |
| Raphaël Boalouzet Domenech as Nicholas' classmate |
| Antoine Martel as Nicholas' classmate |
| Marius Guillevic as Nicholas' classmate |
| Clément Moch Roussel as Nicholas' classmate |
| Joseph Robinson as Nicholas' classmate |
| Thomas Beauvais as Nicholas' classmate |
| Gabriel Hervé as Nicholas' classmate |
| Thibault Vignon as Nicholas' classmate |
| Victor Deruelle as Nicholas' classmate |
| César Ohana as Nicholas' classmate |
| Noé Chaurang as Nicholas' classmate |
| Aurélien Cesson as Nicholas' classmate |
| Writing | |
| Mathias Gavarry | Adaptation |
| Mathias Gavarry | Dialogue |
| Mathias Gavarry | Screenplay |
| René Goscinny | Characters |
| Julien Rappeneau | Adaptation |
| Julien Rappeneau | Dialogue |
| Julien Rappeneau | Screenplay |
Production | |
| Vivien Aslanian | Co-Producer |
| Emilien Bignon | Associate Producer |
| Christine de Jekel | Executive Producer |
| Olivier Delbosc | Producer |
| Cédric Iland | Co-Producer |
| Romain Le Grand | Co-Producer |
| Marc Missonnier | Associate Producer |
| Marco Pacchioni | Co-Producer |
| Bastien Sirodot | Co-Producer |
Sound | |
| Martin Rappeneau | Original Music Composer |
Writing | |
| Jean-Jacques Sempé | Characters |
Directing | |
| Julien Rappeneau | Director |
Production | |
| Nicolas Zanetti | Assistant Unit Manager |
