Hoffman Lake is an unincorporated community and census-designated place (CDP) in Kosciusko County, Indiana, United States.

The community is in western Kosciusko County, surrounding the natural water body of Hoffman Lake. It is bordered to the south by U.S. Route 30, which leads east 8 miles (13 km) to Warsaw, the county seat, and northwest 18 miles (29 km) to Plymouth. Hoffman Lake is bordered to the southeast, across US 30, by the unincorporated community of Atwood.

According to the U.S. Census Bureau, the Hoffman Lake CDP has a total area of 1.01 square miles (2.62 km), of which 0.70 square miles (1.81 km) are land and 0.31 square miles (0.80 km), or 30.72%, are water. The lake drains at its south end into Robinson Ditch, which flows southwest 2 miles (3 km) to the Tippecanoe River, part of the Wabash River watershed.