六线鱼科是辐鳍鱼纲鲉形目的其中一科。

六线鱼科下分5个属，如下：

The family of marine fishes Hexagrammidae incorporates the greenlings. These fish are found on the continental shelf in the temperate or subarctic waters of the North Pacific. They are a well-known family in the littoral zone from southern California north to the Aleutian Islands. The most commercially important species is the lingcod (Ophiodon elongatus), a common food fish.