| Ofttimes screeching item | 24 |
| Og to burn on Christmas | 23 |
| Ogata Korin's medium | 24 |
| Ogden Nash's foot? | 22 |
| Ogden Nash's forte | 22 |
| Ogden Nash's long suit | 26 |
| Ogden Nash's one-L priest | 29 |
| Ogden Nash's priest | 23 |
| Ogden Nash's two-L beast | 28 |
| Ogden Publications magazine | 27 |
| Ogden who wrote light verse | 27 |
| Ogle's next of kin | 22 |
| Ogle, with "at" | 25 |
| Ogre voiced by Mike Myers | 25 |
| Ogress in "Shrek" | 27 |
| Oh What ____ Was Mary | 22 |
| Oh! cable network co-founder | 28 |
| Oh, Howe he could invent! | 25 |
| Oh, so softly: Mus. abbr. | 25 |
| Oh, to be in ancient Rome! | 26 |
| Oh, what a relief it is! | 24 |
| OH- or Cl-, chemically | 22 |
| Oh-so-cute facial features | 26 |
| Oh-so-dainty, in Devon | 22 |
| Oh-so-quaint, in England | 24 |
| Ohio band Over the ___ | 22 |
| Ohio city after a cleanup? | 26 |
| Ohio city named for a queen | 27 |
| Ohio city north of Columbus | 27 |
| Ohio city north of Dayton | 25 |
| Ohio city on Lake Erie | 22 |
| Ohio city WSW of Columbus | 25 |
| Ohio clock setting: Abbr. | 25 |
| Ohio college or ancient city | 28 |
| Ohio college or its town | 24 |
| Ohio college, or its town | 25 |
| Ohio county north of Huron | 26 |
| Ohio et al., to W. Va. | 22 |
| Ohio governor Strickland | 24 |
| Ohio home of the Wrights | 24 |
| Ohio hometown of LeBron James | 29 |
| Ohio hoopster, for short | 24 |
| Ohio hoopsters, in headlines | 28 |
| Ohio Indians, in the past | 25 |
| Ohio liberal arts college | 25 |
| Ohio NBAers, in headlines | 25 |
| Ohio Northern University town | 29 |
| Ohio Northern's town | 24 |
| Ohio or Arkansas, e.g. | 22 |
| Ohio or Colorado: Abbr. | 23 |
| Ohio or Utah, to René | 24 |
| Ohio political dynasty | 22 |
| Ohio rubber plant site | 22 |
| Ohio State's conference | 27 |
| Ohio team, on scoreboards | 25 |
| Ohio town near Steubenville | 27 |
| Ohio town or its college | 24 |
| Ohio travel-guide listings | 26 |
| Ohio University mascot | 22 |
| Ohio's Lake ___ College | 27 |
| Ohio's rubber city | 22 |
| Ohio's state flower | 23 |
| Ohio's state insect | 23 |
| Ohio-based faucet maker | 23 |
| Ohio-born humorist Bombeck | 26 |
| Ohio-Ontario separator | 22 |
| Ohio/Ontario separator | 22 |
| Ohne, across the Rhine | 22 |
| Oil a portion of veal? | 22 |
| Oil additive since 1954 | 23 |
| Oil and gasoline giant | 22 |
| Oil and vinegar alternative | 27 |
| Oil and vinegar concoction | 26 |
| Oil and vinegar holder | 22 |
| Oil and vinegar holders | 23 |
| Oil and vinegar, maybe | 22 |
| Oil cartel based in Vienna | 26 |
| Oil cartel's initials | 25 |
| Oil cartel's inits. | 23 |
| Oil cartel's letters | 24 |
| Oil city of west Texas | 22 |
| Oil city on the Caspian | 23 |
| Oil company acquired by BP | 26 |
| Oil company in a 1999 merger | 28 |
| Oil company mercenary? | 22 |
| Oil directly from a well | 24 |
| Oil driller's setup | 23 |
| Oil drilling equipment | 22 |
| Oil field investigation | 23 |
| Oil filter accumulation | 23 |
| Oil fire fighter Red ___ | 24 |
| Oil for the lamps of Roma | 25 |
| Oil from flower petals | 22 |
| Oil from orange blossoms | 24 |
| Oil from orange flowers | 23 |
| Oil giant acquired by BP | 24 |
| Oil giant based in Memphis | 26 |
| Oil giant with HQ in Vienna | 27 |
| Oil low in erucic acid | 22 |
| Oil magnate J. Paul ___ | 23 |