Ganbare Goemon Gaiden: Kieta Ōgon Kiseru (がんばれゴエモン外伝 きえた黄金キセル? lit. "Ganbare Goemon Gaiden: The Gold Pipe Which Disappeared") is the fourth installment in the Ganbare Goemon series, developed and published by Konami for the Family Computer on January 5th, 1990 in Japan. It was later released for mobile phones on 2007, Wii Virtual Console on 2012, for 3DS Virtual Console on 2013, and for Wii U Virtual Console on 2015 in Japan.
While Goemon is praying to his ancestors, he notices that his pipe is gone. Aided by Ebisumaru, he goes to find it. This game introduced many characters that appeared later in the series, such as Yae. It is the first Goemon role playing game, and the third Goemon game to appear on a Nintendo system.