Columbus Area Mensa
- Includes news, staff directory, schedule of events, details for testing and gifted children resources.
- http://www.columbus.us.mensa.org/

Dayton Area Mensa
- Dayton, Ohio.
- http://dayton.us.mensa.org/

East Central Ohio Mensa
- Medina, Portage, Stark, Summit, Richland, Mahoning, Columbiana, Trumbull, Wayne, Holmes, Tuscarawas, Crawford, and Ashland counties.
- http://www.ecom.us.mensa.org/

Cleveland Area Mensa
- The North Coast of Ohio, with members as far east as Ashtabula, as far west as Sandusky.
- http://cleveland.us.mensa.org/