Citizen Dog is a 2004 Thai romance film, directed by Wisit Sasanatieng and based on a novel by Wisit's wife, Koynuch, which was illustrated by him. The second film by the director of Tears of the Black Tiger, it is a colorful story set in contemporary Bangkok, where a boy (Pod) without a goal in life falls in love with a girl (Jin) who lives for her dreams. The film is frequently compared with the French movie Amélie. One of the main themes of the movie is that people will only find something from the moment when they stopped looking for it.

Wisit Sasanatieng is a Thai film director and screenwriter of Chinese descent. Best known for his colourful debut feature film, Tears of the Black Tiger, he is among a "New Wave" of Thai directors that include Nonzee Nimibutr and Pen-Ek Ratanaruang.