World 4-3

World 4-3 may refer to:
 * World 4-3 (Super Mario Bros.)
 * World 4-3 (Super Mario Bros.: The Lost Levels)
 * World 4-3 (Super Mario Bros. 2)
 * World 4-3 (Super Mario Bros. 3)
 * Don't Look Back!, World 4-3 in Super Mario World 2: Yoshi's Island.
 * In the Clouds, World 4-3 in Yoshi's Island DS.
 * World 4-3 (New Super Mario Bros.)
 * World 4-3 (New Super Mario Bros. Wii)
 * World 4-3 (Super Mario 3D Land)
 * World 4-3 (New Super Mario Bros. 2)
 * Prickly Goombas!, World 4-3 in New Super Mario Bros. U.
 * Fire and Ice, World 4-3 in New Super Luigi U.