World 4-1

World 4-1 may refer to:


 * World 4-1 of Super Mario Bros.
 * World 4-1 of Super Mario Bros.: The Lost Levels
 * World 4-1 of Super Mario Bros. 2
 * World 4-1 of Super Mario Bros. 3
 * GO! GO! MARIO!!, World 4-1 in Super Mario World 2: Yoshi's Island.
 * Rock 'n' Fall, World 4-1 in Yoshi's Island DS.
 * World 4-1 in New Super Mario Bros.
 * World 4-1 in New Super Mario Bros. Wii
 * Rickety Rails, World 4-1 of Donkey Kong Country Returns.
 * World 4-1 in Super Mario 3D Land
 * World 4-1 in New Super Mario Bros. 2
 * Snow Rise, World 4-1 of Paper Mario: Sticker Star.
 * Spinning-Star Sky, World 4-1 in New Super Mario Bros. U.
 * Broozers and Barrels, World 4-1 in New Super Luigi U.