is a Japanese-developed puzzle-platformer video game designed by Koichi Nakamura and published by Enix. As Enix's debut title, Door Door first released in February 1983 for the NEC PC-8801 and was subsequently converted for other Japanese computers. The game's success prompted a Famicom port and an expanded edition in 1985 as well as a mobile phone release in 2004. In 2006, editors of the popular Japanese gaming magazine Famitsu placed the game among classics such as Super Mario Bros. and Donkey Kong in its listing of the best Famicom games; despite its popularity, Door Door has never been released outside Japan.

Door, Door is the debut album by Australian rock band The Birthday Party, released under the name "The Boys Next Door" in 1979. The Album was recorded before the band left Australia for London in 1980, at which point they changed their name to The Birthday Party and created the body of work for which they are most recognized. Likewise, the album is different stylistically from their later work, being less dark and slightly more poppy. Guest saxophonist Chris Coyne had played in the band in its pre-Punk days. He appears on "The Nightwatchman," "Brave Exhibitions" and "The Voice."