World 1 is the first world that appears in Super Mario 3D World.
- World 1-1: Super Bell Hill
- World 1-2: Koopa Troopa Cave
- World 1-A: Chargin' Chuck Blockade
- World 1-3: Mount Beanpole
- World 1-4: Plessie's Plunging Falls
- World 1-5: Switch Scramble Circus
- World 1-Castle: Bowser's Highway Showdown
- World 1-Toad: Captain Toad Goes Forth
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