World 2-S

World 2-S or World 2-Secret may refer to:
 * Mystery of the Castle?, World 2-S in Yoshi's Island: Super Mario Advance 3.
 * Yikes! Boiling Hot!, World 2-S in Yoshi's Island DS.
 * All Aboard the Terrain Train, World 2-S in Yoshi's New Island.
 * Perils of the Perplexing Pyramid, World 2-S in Yoshi's Woolly World.
 * The Hidden Gorge, World 2-S in Mario + Rabbids Kingdom Battle.