Clymer Meadow Preserve is a Nature Conservancy preserve in the Blackland Prairie of north Texas that protects one of the largest remaining stretches of tallgrass prairie in the state. This landscape was once widespread but has become rare. As of 2021, the preserve covered about 1,400 acres and was still expanding through occasional land acquisitions. Its importance rests in safeguarding two globally imperilled plant communities, the Little Bluestem-Indiangrass series and the Gamagrass-Switchgrass series, making it an important refuge for native prairie habitat in Texas.