World 5-1

World 5-1 may refer to:
 * World 5-1 in Super Mario Bros..
 * World 5-1 in Super Mario Bros.: The Lost Levels.
 * World 5-1 in Super Mario Bros. 2.
 * World 5-1 in Super Mario Bros. 3.
 * Forest of Illusion 1, World 5-1 in Super Mario World.
 * BLIZZARD!!!, World 5-1 in Super Mario World 2: Yoshi's Island.
 * World 5-1 in New Super Mario Bros..
 * Rompin', Stompin' Chomps, World 5-1 in Yoshi's Island DS.
 * World 5-1 in New Super Mario Bros. Wii.
 * World 5-1 in Super Mario 3D Land.
 * World 5-1 in New Super Mario Bros. 2.
 * Jungle of the Giants, World 5-1 in New Super Mario Bros. U.
 * Giant Swing-Along, World 5-1 in New Super Luigi U.
 * Sunshine Seaside, World 5-1 in Super Mario 3D World.
 * Brave the Bumpty Blizzard, World 5-1 in Yoshi's New Island.
 * World 5-1 in Puzzle & Dragons: Super Mario Bros. Edition.
 * Fluffy Snow, Here We Go!, World 5-1 in Yoshi's Woolly World.