Tishomingo
- County:
- Johnston County
- County Seat:
- Yes
- Area (mi²):
- 5.276
- State:
- Oklahoma
Tishomingo is a city located in Johnston County, Oklahoma. Tishomingo has a 2026 population of 3,083. It is also the county seat of Johnston County. Tishomingo is currently growing at a rate of 0.82% annually but its population has decreased by -0.48% since the most recent census, which recorded a population of 3,098 in 2020.