L'Immortelle is a 1963 international co-produced drama film directed by Alain Robbe-Grillet, his first feature after the worldwide success of Last Year at Marienbad which he wrote. Entered into the 13th Berlin International Film Festival, it also won the Prix Louis Delluc.

Set in Istanbul, it tells the story of a withdrawn man falling hopelessly in love with an attractive and sexy woman who will not reveal her identity. While the two speak French to each other, the other characters mostly speak unsubtitled Turkish. Using a non-linear structure, intercut with memories and fantasies, neither the characters nor the viewers can be sure of what is portrayed and must reach their own understanding.