Crab may refer to:
- Crab, a special piece in the bilging puzzle.
- Hermit crab, a trinket.
- Karkinos, a pet crab.
- Crab - a shack on Turtle Island on the Cerulean Ocean, originally erected on the retired Midnight Ocean.
- Crab Archipelago on the Emerald Ocean.
- Crab Archipelago on the retired Hunter Ocean.
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