The Vagina Monologues is an Obie Award-winning episodic play written by Eve Ensler which ran off-Broadway in 1996. Ensler originally starred in the production, playing all the various women who share their views about their vaginas with the audience; when she left the play it was recast with three celebrity monologists. The production has been staged internationally, and a television version featuring Ensler was produced by cable TV channel HBO.

The Vagina Monologues are the cornerstone of the V-Day movement, whose participants stage benefit performances of the show worldwide each year between February 1st and March 8th (International Women's Day). The first V-Day benefit took place on Valentine's Day 1998 and many of the local benefits are held on Valentine's Day. The "V" in V-Day stands for Valentine, Vagina, and Victory, linking love and respect for women to ending violence against women and girls. The proceeds from these performances go to programs that work to end violence against women and girls, including crisis centers and women's shelters.