Pola X is a 1999 French drama film directed by Leos Carax and starring Guillaume Depardieu, Yekaterina Golubeva and Catherine Deneuve. The film is loosely based on the Herman Melville novel Pierre: or, The Ambiguities. It revolves around a young novelist who is confronted by a woman who claims to be his lost sister, and the two begin a romantic relationship. The film title is an acronym of the French title of the novel, Pierre ou les ambiguïtés, plus the Roman numeral "X" indicating the tenth draft version of the script that was used to make the film.

The film was entered into the 1999 Cannes Film Festival. Pola X has been associated by some with the New French Extremity.