Alpine County Courthouse, County courthouse in Markleeville, United States.

The Alpine County Courthouse is a one-story Romanesque Revival building on the site of Jacob J. Marklee's 1862 log cabin in Markleeville. It is built of locally quarried rhyolite tuff blocks from above Silver Mountain City, with additional stone taken from the ruins of the Silver Creek jail in Plumas County. Designed by Frederick J. DeLongchamps, it was intended to be two stories but was limited to one for financial reasons.

The courthouse was built in 1928 following architect Frederic DeLongchamps' design and cost 75,000 dollars to construct. In 2004 it was added to the National Register of Historic Places.

The site was once occupied by Jacob J. Marklee's log cabin; he claimed 65 hectares here in 1862, and the village of Markleeville grew on his land. The spot is a California Historical Landmark (#240). In 1987, footage for the CBS show High Mountain Rangers was filmed at the courthouse.

The courthouse still holds sessions of the Alpine County Superior Court, the county's only superior court, in a county that is California's smallest by population. The building also housed the district attorney, sheriff and probation department over the years. It stands in Markleeville, the county seat since 1874, and is a California Historical Landmark site, so visitors can view the exterior at any time.

Some stones used in construction came from an old jail in Silver Creek, Plumas County that was demolished. This reuse means the building actually carries parts of an older structure within it.