World 6

World 6 (also written as World Six) can refer to:
 * World 6 (Super Mario Bros.) - World Six of Super Mario Bros..
 * World 6 (Super Mario Bros.: The Lost Levels) - World Six of Super Mario Bros.: The Lost Levels.
 * World 6 (Super Mario Bros. 2) - World Six of Super Mario Bros. 2.
 * Ice Land - World Six of Super Mario Bros. 3.
 * Chocolate Island - World Six of Super Mario World.
 * Nimbus Land - World Six of Super Mario RPG: Legend of the Seven Stars.
 * World 6 (Super Mario World 2: Yoshi's Island) - World Six and the final World of Super Mario World 2: Yoshi's Island.
 * Parsely Woods - World Six of Wario Land: Super Mario Land 3.
 * World 6 (NSMB) - World Six of New Super Mario Bros..
 * Gleam Glacier - World Six of Super Princess Peach.
 * Twilight City - World Six and Final World of Mario vs. Donkey Kong.
 * Toadstool Castle - World Six of Mario vs. Donkey Kong 2: March of the Minis.
 * The Center of the Universe - World Six and Final World of Super Mario Galaxy.
 * World 6 (New Super Mario Bros. Wii) - World Six of New Super Mario Bros. Wii.