World 1-2

World 1-2 may refer to:


 * World 1-2 (Super Mario Bros.)
 * World 1-2 (Super Mario Bros.: The Lost Levels)
 * World 1-2 (Super Mario Bros. 2)
 * Yoshi's Island 2, World 1-2 in Super Mario World
 * Watch Out Below!, World 1-2 in Super Mario World 2: Yoshi's Island
 * Hit the M Blocks!, World 1-2 in Yoshi's Island DS
 * World 1-2 (Super Mario Bros. 3)
 * World 1-2 (New Super Mario Bros.)
 * World 1-2 (New Super Mario Bros. Wii)
 * World 1-2 (Super Mario 3D Land)
 * World 1-2 (New Super Mario Bros. 2)
 * Tilted Tunnel, World 1-2 in New Super Mario Bros. U
 * Crooked Cavern, World 1-2 in New Super Luigi U