Bluegill, a freshwater fish of the sunfish group. Bluegills are among the largest of the sunfish, reaching a weight of one pound (454 g) or more. The bluegill's body is bluish green above and dull gold beneath. Faint dark bars appear on the darker parts of the body. Bluegills are common in lakes and streams of the Mississippi Valley, and occur naturally as far west as Colorado. The fish makes good eating.

The bluegill is Leopomis macrochirus of the family Centrarchidae.