| Owner of The History Channel | 28 |
| Owner of the review site gdgt | 29 |
| Owner of the Snoopy J blimp | 27 |
| Owner of the TechCrunch site | 28 |
| Owner of the Twilight Grill? | 28 |
| Owner's acquisition | 23 |
| Owner's cattle mark | 23 |
| Owner's certificate | 23 |
| Owner's manual reader | 25 |
| Owner-player go-between | 23 |
| Owners of 21 merit badges | 25 |
| Owners of a famous cow | 22 |
| Owners of an infamous cow | 25 |
| Owners of lonely hearts? | 24 |
| Owners of the Faeroe Islands | 28 |
| Owners without partners | 23 |
| Ownership card, in Monopoly | 27 |
| Owning a large corporation | 26 |
| Owning a yacht may confer it | 28 |
| Ox long popular in crosswords | 29 |
| Oxcart driver's shout | 25 |
| Oxen may pull plows in this | 27 |
| Oxen might be put in it | 23 |
| Oxen pulling a wagon, say | 25 |
| Oxfam or CARE, for example | 26 |
| Oxford area, for short | 22 |
| Oxford courtyard, for short | 27 |
| Oxford doctorate, briefly | 25 |
| Oxford Group's concern | 26 |
| Oxford offering, for short | 26 |
| Oxford scholarship namesake | 27 |
| Oxford University college | 25 |
| Oxford university nickname | 26 |
| Oxford university since 1844 | 28 |
| Oxford university, familiarly | 29 |
| Oxford yard, for short | 22 |
| Oxford's emporium is hip? | 29 |
| Oxford's form preserver | 27 |
| Oxford's St. ___ College | 28 |
| Oxford, e.g., to its students | 29 |
| Oxford, for one: Abbr. | 22 |
| Oxford, to its citizens | 23 |
| Oxfordian's parent, e.g. | 28 |
| Oxfordshire for short | 22 |
| Oxidation's evidence | 24 |
| Oxide used in picture tubes | 27 |
| Oxlike African antelope | 23 |
| Oxy, Vike and the like | 22 |
| Oxycodone-based painkiller | 26 |
| Oxycodone-plus-aspirin brand | 28 |
| Oxygen barrier provider | 23 |
| Oxygen cofounder Winfrey | 24 |
| Oxygen doesn't have one | 27 |
| Oxygen emanating from a lawn? | 29 |
| Oxygen network co-founder | 25 |
| Oxygen sex expert Johanson | 26 |
| Oxygen tent locale, briefly | 27 |
| Oxygen tent site, in brief | 26 |
| Oxygen's atomic number | 26 |
| Oxygen's electrons, e.g. | 28 |
| Oxygen-consuming bacterium | 26 |
| Oxygen-consuming organism | 25 |
| Oxygen-dependent bacterium | 26 |
| Oxygen-dependent creature | 25 |
| Oxygen-dependent organism | 25 |
| Oxygen-dependent organisms | 26 |
| Oxygen-loving organism | 22 |
| Oxygen-needing bacterium | 24 |
| Oxygen-needing organism | 23 |
| Oxygen-shunning organism | 24 |
| Oxygen-thriving organism | 24 |
| Oxygen-utilizing bacterium | 26 |
| Oxygenating of venous blood | 27 |
| Oxymoron for a homely person | 28 |
| Oxymoron from Charlie Brown | 27 |
| Oxymoron re Stephen Douglas | 27 |
| Oxymoronic change of pace | 25 |
| Oxymoronic film title of 1994 | 29 |
| Oxymoronic load of cash | 23 |
| Oxymoronic novel genre | 22 |
| Oxymoronic picnic tableware | 27 |
| Oxymoronic place to work | 24 |
| Oxymoronic shrimp type | 22 |
| Oy, she's such a gossip | 27 |
| Oyster hoister's hangout? | 29 |
| Oyster shell blast spot | 23 |
| Oyster's nest egg? | 22 |
| Oyster-shucking discard | 23 |
| Oysterman's apparatus | 25 |
| Oysters' relatives | 22 |
| Oz creator's family | 23 |
| Oz Scarecrow's lack | 23 |
| Oz visitor's makeup | 23 |
| Oz Woodman's makeup | 23 |
| Oz's "founder" | 28 |
| Oz's Dorothy, for a while | 29 |
| Ozark "encore" | 24 |
| Ozark angler's catch | 24 |
| Ozone depleter (Abbr.) | 22 |
| Ozone depleter, briefly | 23 |