World 1-2 may refer to:
- World 1-2 (Super Mario Bros.)
- World 1-2 (Super Mario Bros.: The Lost Levels)
- World 1-2 (Super Mario Bros. 2)
- Yoshi's Island 2, World 1-2 in Super Mario World.
- Watch Out Below!, World 1-2 in Super Mario World 2: Yoshi's Island.
- Hit the M Blocks!, World 1-2 in Yoshi's Island DS.
- World 1-2 (Super Mario Bros. 3)
- World 1-2 (New Super Mario Bros.)
- World 1-2 (New Super Mario Bros. Wii)
- World 1-2 (Super Mario 3D Land)
- World 1-2 (New Super Mario Bros. 2)
- Bouquet Gardens, in Paper Mario: Sticker Star.
- Tilted Tunnel, World 1-2 in New Super Mario Bros. U.
- Crooked Cavern, World 1-2 in New Super Luigi U.
- Koopa Troopa Cave, World 1-2 in Super Mario 3D World.
- Chomp Rock 'n' Roll, in Yoshi's New Island.
- World 1-2 in Puzzle & Dragons: Super Mario Bros. Edition.
- Bounceabout Woods, World 1-2 in Yoshi's Woolly World
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