Keminmaa (; until 1979 Kemin maalaiskunta; ; ) is a municipality of Finland. It is located near the towns of Kemi and Tornio in the Lapland region.
The municipality has a population of () and covers an area of of which is water. The population density is .
Neighbouring municipalities are Kemi, Simo, Tervola and Tornio.
Blazon: Gules with a springing Silver salmon, holding a padlock in its mouth.