McFarland State Historic Park is a state historic site located in downtown Florence, Arizona. It is composed of the historic courthouse and other buildings dating back to the Arizona Territory period of state history.

The courthouse built in 1891 is recognized as a national historic landmark and is listed in the National Register of Historic Places. The park is named after Arizona statesman Ernest McFarland, a United States Senator and Governor of Arizona, who purchased the old courthouse building, donated it to the state and financed its renovation.

Other buildings in the state park include a period jail and the original 1878 structure. An archives building built in 1982 now houses McFarlands archives which contains many of his papers and records.