Ohio cities starting with G
- Gahanna, OH 34
- Galena, OH 9
- Galion, OH 38
- Gallipolis, OH 28
- Galloway, OH 13
- Garfield Heights, OH 13
- Garrettsville, OH 10
- Gates Mills, OH 7
- Geneva, OH 15
- Genoa, OH 5
- Georgetown, OH 15
- Germantown, OH 15
- Gibsonburg, OH 7
- Girard, OH 12
- Glenford, OH 7
- Glenmont, OH 5
- Glouster, OH 9
- Goshen, OH 14
- Grafton, OH 16
- Grand Rapids, OH 7
- Granville, OH 13
- Green, OH 5
- Greenfield, OH 20
- Greentown, OH 5
- Greenville, OH 36
- Grove City, OH 52
- Groveport, OH 15