- Capital: Columbus
- Population: 11 million
Stadiums – North America – United States – Ohio
| Location | Stadium | Capacity | Main use |
| Columbus | Ohio Stadium | 102,000 | American football |
| Cleveland | Huntington Bank Field | 67,000 | American football |
| Cincinnati | Great American Ball Park | 43,000 | Baseball |
| Cincinnati | Nippert Stadium | 40,000 | American football |
| Cleveland | Progressive Field | 34,000 | Baseball |
| Toledo | Glass Bowl Stadium | 26,000 | American football |
| Cincinnati | TQL Stadium | 26,000 | Football |
| Kent | Dix Stadium | 25,000 | American football, field lacrosse, football |
| Bowling Green | Doyt L. Perry Stadium | 24,000 | American football |
| Oxford | Fred C. Yager Stadium | 24,000 | American football |
| Youngstown | Arnold D. Stambaugh Stadium | 20,000 | American football |
| Columbus | Lower.com Field | 20,000 | Football |
| Columbus | Historic Crew Stadium | 19,000 | Football |
| Cleveland | Rocket Mortgage FieldHouse | 19,000 | Basketball, ice hockey |
| Columbus | Nationwide Arena | 18,000 | Ice hockey, volleyball |
| Columbus | Value City Arena | 18,000 | Basketball, ice hockey |
| Parma | Byers Field | 12,000 | American football, football |
| Cincinnati | Fifth Third Arena | 12,000 | Basketball, volleyball |
| Mason | Center Court | 11,000 | Tennis |
| Dayton | Welcome Stadium | 11,000 | American football |
| Cincinnati | Cintas Center | 10,000 | Basketball, volleyball |
| Columbus | Jesse Owens Memorial Stadium | 10,000 | Field lacrosse, football |