Mountain Grove City Hall, also known as Mountain Grove City Hall and Jail, is a historic city hall located at Mountain Grove, Wright County, Missouri. It was built in 1937–1938, and is a two-story, flat-roofed building in the Works Progress Administration (WPA)'s version of Modern style, WPA Moderne. The building is clad in unfinished native field stone with beaded mortar joints, a technique commonly referred to as "Ozark rock" or "giraffe rock" construction. It was funded by the WPA and constructed with local labor.[2]: 5, 8