Trigun (Japanese: トライガン, Hepburn: Toraigan) is a Japanese manga series written and illustrated by Yasuhiro Nightow. Trigun was first serialized in Tokuma Shoten's shōnen manga magazine Monthly Shōnen Captain from April 1995 to January 1997, when the magazine ceased its publication; its chapters were collected in three tankōbon volumes. The series continued its publication in Shōnen Gahosha's seinen manga magazine Young King OURs, under the title Trigun Maximum, from October 1997 to March 2007. Shōnen Gahosha republished the Trigun chapters in two volumes, and collected the Trigun Maximum chapters in fourteen volumes.
Set on the fictional planet known as No Man's Land, the plot follows Vash the Stampede, a famous gunman who is constantly fighting bounty hunters seeking to obtain the immense bounty on his head. As the narrative progresses, Vash's past is explored. Trigun originated from Nightow's fascination with Western movies. Nightow wanted Vash to be different from cowboys in Western movies by avoiding killing enemies and instead exploring the characters involved in each story arc.