World 5-S

World 5-S or World 5-Secret may refer to:
 * Items are fun!, World 5-S in Yoshi's Island: Super Mario Advance 3.
 * Yoshi's Island Easter Eggs, World 5-S in Yoshi's Island DS.
 * Snow Go Mountain, World 5-S in Yoshi's New Island.
 * Yoshi's Curtain Call, World 5-S in Yoshi's Woolly World.