| Official Name: | Mehan, Oklahoma |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Oklahoma#USA |
| Pushpin Label: | Mehan |
| Coordinates: | 36.0447°N -96.9425°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Oklahoma |
| Subdivision Type2: | County |
| Subdivision Name2: | Payne |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.14 |
| Area Land Sq Mi: | 0.14 |
| Area Water Sq Mi: | 0.00 |
| Area Total Km2: | 0.36 |
| Area Land Km2: | 0.36 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Density Km2: | 94.03 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 830 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 74074 (Stillwater) |
| Area Code: | 405/572 |
| Blank Name: | FIPS code |
| Blank Info: | 40-47550 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2812866 |
| Population Total: | 34 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 242.86 |
Mehan is an unincorporated community and census-designated place (CDP) in Payne County, Oklahoma, United States. It was first listed as a CDP prior to the 2020 census.
The CDP is in central Payne County, on the northeast side of the valley of Stillwater Creek, a southeast-flowing tributary of the Cimarron River. Mehan is southeast of Stillwater, the Payne county seat, and 10miles northeast of Perkins.