| Osage County Courthouse | |
| Coordinates: | 38.6103°N -95.6833°W |
| Built: | 1923 |
| Architecture: | Late 19th And 20th Century Revivals |
| Added: | April 18, 2007 |
| Area: | 5.3acres |
| Mpsub: | County Courthouses of Kansas MPS |
| Refnum: | 07000320 |
The Osage County Courthouse in Lyndon, Kansas is a historic courthouse built in 1923. Located at 717 Topeka Avenue, it was listed on the National Register of Historic Places in 2007.
The courthouse is a three-story reinforced concrete building faced with tooled limestone on its first floor, and brick and clay tile above. It has frame floors and a frame/steel truss roof. It is about NaNfeet in plan.
The listing included two contributing buildings (the courthouse and a jail building) and two non-contributing ones (another jail building and a shed). It also includes three contributing objects (a World War I memorial, a flag pole, a Korean War memorial) and two non-contributing objects (a 1969 Memorial and a Vietnam War memorial).[1]