Chabat came in 1963 with his family from Algeria to France and began his acting career in the 1980s with comedic appearances on television. In 1995, he starred in the comedy A woman for two, which was a box office hit in France, his first nomination for the French film award César one. He plays the role of an unfaithful husband whose wife anbändelt with a lesbian.
In 1997, Alain Chabat first self directed - at the Comedy Didier, in which he also starred - a dog in human form - plays. For Didier Chabat got a César for the best first film of a director. In 1997, he played a major role in the gloomy police thriller Le Cousin - dangerous knowledge.
He gained greater international recognition in 2002 as director, co - producer and writer of the movie Asterix and Obelix: Mission Cleopatra, in which he also plays the role of Julius Caesar. For this role he was nominated for the European Film Awards in 2002 for an audience award.