The Columbia County Courthouse, built in 1905, is an historic courthouse building located at 173 NE Hernando Avenue in Lake City, Florida. It was designed by architect Frank Pierce Milburn in the Classical Revival style of architecture. It was built with a dome and cupola, which were removed before 1989, but were restored in 2003 during a major renovation and expansion of the courthouse. In 1989, the Columbia County Courthouse was listed in A Guide to Florida's Historic Architecture, published by the University of Florida Press. The Columbia County Courthouse is a contributing property in the Lake City Historic Commercial District.