World 1-8

World 1-8 may refer to:
 * Salvo the Slime's Castle, World 1-8 in Super Mario World 2: Yoshi's Island.
 * Gilbert the Gooey's Castle, World 1-8 in Yoshi's Island DS.
 * Big Beanie's Castle, World 1-8 in Yoshi's New Island.
 * Burt the Bashful's Castle, World 1-8 in Yoshi's Woolly World.