近松門左衛門
is a love-suicide Bunraku play by Chikamatsu Monzaemon. While not his first one (which was probably the puppet play "The Soga Successors" in 1683) nor his most popular (which would be "The Battles of Coxinga"), it is probably the most popular of his "domestic tragedies" or "domestic plays" ("sewamono") as Donald Keene characterizes the non-historical plays.