Astacoidea is superfamily of freshwater crayfish that live in the Northern Hemisphere.

The other superfamily of crayfish, Parastacoidea, lives in the Southern Hemisphere.

Astacoidea consists of three families: Astacidae (from Europe and western North America), Cambaridae (from eastern North America), and Cambaroididae (from eastern Asia).

Crayfish are closely related to lobsters, as shown in the simplified cladogram below.

[1][2][3] Enoplometopidae Nephropidae Parastacidae Cambaroididae Astacidae Cambaridae