| Quincy, Omaha and Kansas City Railroad Office Building | |
| Coordinates: | 40.2025°N -93.1236°W |
| Architect: | Kern, Emmanuel G. |
| Architecture: | Romanesque, Late 19th Century Commercial |
| Added: | January 7, 1992 |
| Area: | less than one acre |
| Refnum: | 91001917 |
Quincy, Omaha and Kansas City Railroad Office Building, also known as the O.K. Building and Sullivan County Courthouse, is a historic office building located at Milan, Sullivan County, Missouri. It was built in 1898 by the Quincy, Omaha and Kansas City Railroad. It is a two-story, rectangular brick building on a limestone foundation. It features a Romanesque style round arched entrance and second-story window openings. From 1908 to 1940, the building was used by Sullivan County as a courthouse and served as the seat of government for the county.[1]
It was listed on the National Register of Historic Places in 1992.