| Oh./Ill. separator | 18 |
| OH/CA cities | 12 |
| OHenry, for one | 15 |
| Ohia "Hearts ___ Arrived" | 35 |
| Ohio A.L. team, on scoreboards | 30 |
| Ohio airport code | 17 |
| Ohio and Oregon | 15 |
| Ohio ballplayers | 16 |
| Ohio band Over the ___ | 22 |
| Ohio baseballers | 16 |
| Ohio birthplace of Toni Morrison | 32 |
| Ohio birthplace of William McKinley | 35 |
| Ohio cager, briefly | 19 |
| Ohio campus | 11 |
| Ohio campus town | 16 |
| Ohio cheerleader's request, twice | 37 |
| Ohio city | 9 |
| Ohio city after a cleanup? | 26 |
| Ohio city named for a mathematician | 35 |
| Ohio city named for a queen | 27 |
| Ohio city near Dayton | 21 |
| Ohio city north of Columbus | 27 |
| Ohio city north of Dayton | 25 |
| Ohio city on Lake Erie | 22 |
| Ohio city on the Ohio | 21 |
| Ohio city where a Burger King worker YouTubed himself bathing in the sink in 2008 | 81 |
| Ohio city where A.A. was founded | 32 |
| Ohio city where Alcoholics Anonymous was founded | 48 |
| Ohio city where Clark Gable lived | 33 |
| Ohio city where William McKinley was born | 41 |
| Ohio city whose name means "hospitality" in Greek | 59 |
| Ohio city with schools named for Firestone, Goodyear, and Goodrich | 66 |
| Ohio city WSW of Columbus | 25 |
| Ohio city, birthplace of President Hayes | 40 |
| Ohio city, familiarly | 21 |
| Ohio city, to locals | 20 |
| Ohio city: Abbr. | 16 |
| Ohio clock setting: Abbr. | 25 |
| Ohio club with a spring training facility in Sarasota | 53 |
| Ohio coachman? | 14 |
| Ohio college | 12 |
| Ohio college attended by Karen O and Liz Phair | 46 |
| Ohio college locale | 19 |
| Ohio college named for a biblical city | 38 |
| Ohio college or ancient city | 28 |
| Ohio college or its town | 24 |
| Ohio college that was the first in the U.S. to award degrees to women | 69 |
| Ohio college town | 17 |
| Ohio college, or its town | 25 |
| Ohio community named for a Connecticut town | 43 |
| Ohio Congressman Pat | 20 |
| Ohio conservatory | 17 |
| Ohio county | 11 |
| Ohio county north of Huron | 26 |
| Ohio et al., to W. Va. | 22 |
| Ohio feeder | 11 |
| Ohio feline? | 12 |
| Ohio governor Strickland | 24 |
| Ohio governor who became president | 34 |
| Ohio holy book | 14 |
| Ohio home of Corporal Klinger on "MASH" | 49 |
| Ohio home of the Wright brothers | 32 |
| Ohio home of the Wrights | 24 |
| Ohio hometown of LeBron James | 29 |
| Ohio hoopster, for short | 24 |
| Ohio hoopsters, in headlines | 28 |
| Ohio Indian | 11 |
| Ohio Indian, once | 17 |
| Ohio Indians, in the past | 25 |
| Ohio lake | 9 |
| Ohio liberal arts college | 25 |
| Ohio minor league team whose alumni include C. C. Sabathia and Manny RamÃrez | 79 |
| Ohio name | 9 |
| Ohio native | 11 |
| Ohio natives | 12 |
| Ohio NBAer | 10 |
| Ohio NBAers, in headlines | 25 |
| Ohio nickname | 13 |
| Ohio nine | 9 |
| Ohio nine once | 15 |
| Ohio noggins | 12 |
| Ohio Northern University town | 29 |
| Ohio Northern UniversityÂ’s city | 35 |
| Ohio Northern's town | 24 |
| Ohio or Arkansas, e.g. | 22 |
| Ohio or Colorado: Abbr. | 23 |
| Ohio or Iowa | 12 |
| Ohio or Missouri | 16 |
| Ohio or Utah, to René | 24 |
| Ohio players | 12 |
| Ohio political clan | 19 |
| Ohio political dynasty | 22 |
| Ohio political family | 21 |
| Ohio politician? | 16 |
| Ohio port | 9 |
| Ohio pro | 8 |
| Ohio pro, for short | 19 |
| Ohio pros | 9 |
| Ohio river | 10 |
| Ohio River feeder | 17 |