World 7-3

World 7-3 may refer to:
 * World 7-3 in Super Mario Bros..
 * World 7-3 in Super Mario Bros.: The Lost Levels.
 * World 7-3 in Super Mario Bros. 3.
 * Stage 7-3 in Donkey Kong for the Game Boy.
 * World 7-3 in New Super Mario Bros..
 * World 7-3 in New Super Mario Bros. Wii.
 * Handy Hazards, World 7-3 in Donkey Kong Country Returns.
 * World 7-3 in Super Mario 3D Land.
 * Switchback Hill, World 7-3 in New Super Mario Bros. U.
 * Rainbow Skywalk, World 7-3 in New Super Luigi U.
 * Crazy Clouds, World 7-3 in Donkey Kong Country: Tropical Freeze.
 * World 7-3 in Puzzle & Dragons: Super Mario Bros. Edition.
 * Be Brave & Get Up Close!, World 7-3 in Super Mario Maker.
 * World 7-3 in ''Super Mario Maker for Nintendo 3DS.