Crawfish are a type of freshwater crustacean.

Crawfish may also refer to:

• "Crawfish" (song), a song
• Crawfish Creek (Wyoming), a short stream in Yellowstone National Park
• Crawfish Key, an island in Florida
• Crawfish Spring, a spring in Georgia
• Crawfish Interactive, a former video game developer
• Horse Creek (Kentucky), location of the Crawfish post office (as was, now called Hima) and river branch