World 3-7

World 3-7 may refer to:
 * World 3-7 in Super Mario Bros. 3.
 * Stage 3-7 in Donkey Kong for the Game Boy.
 * Monkeys' Favorite Lake, World 3-7 in Super Mario World 2: Yoshi's Island.
 * Tap-Tap's Sunken Cave, World 3-7 in Yoshi's Island DS.
 * Switchboard Falls, World 3-7 in Super Mario 3D World.
 * Lose the Lunge Fish, World 3-7 in Yoshi's New Island.
 * Fanciful Fluff and Feathers, World 3-7 in Yoshi's Woolly World.
 * Every Treasure Has Its Thorn, World 3-7 in Mario + Rabbids Kingdom Battle.