One Hundred Mornings is a 2009 Irish post-apocalyptic drama film written and directed by Conor Horgan. It was one of three films funded by the Irish Film Board's Catalyst Project, designed to give up-and-coming filmmakers the opportunity to produce a low-budget feature film.

Filmed over twenty days in County Wicklow, Ireland, for a total budget of €275,000, it was writer/director Conor Horgan's first feature. The film was produced by Katie Holly for Blinder Films.