Wynnewood is a city in Garvin County, Oklahoma, United States. The population was 2,367 at the 2000 census.
There is also a Wynnewood, Pennsylvania. The railroad workers were from Pennsylvania and named the existing townsites what they wanted. They also named Paoli and Ardmore, Oklahoma after towns in Pennsylvania. Wynnewood was known as "Walner" before that happened.
The original townsite was a rock bottom crossing on the Washita river called Cherokee Crossing. After the Civil War, many veterans of the Southern Cause settled in Wynnewood.