| Ochoa who was the first #1-ranked golfer from Mexico | 52 |
| Ocean State sch. whose motto is "Think Big. We Do." | 61 |
| Occurrence on "Black Friday," Sept. 19, 1873 | 54 |
| Occurrence of events not quite eerily at the same time? | 55 |
| Occurrence after the first and third quarters of the moon | 57 |
| Occupy Wall Street crowd's strategy for part of the weekend? | 64 |
| Occupy Wall Street crowd's complaints about their wages? | 60 |
| Occupational deferment category in the '60s draft | 53 |
| Occupant of the Cleveland Browns' "pound" | 55 |
| Occasional response to "Where's your homework?" | 61 |
| Occasion to buy a CD of the "Polonaise-Militaire"? | 60 |
| Occasion for fireworks, briefly, with "the" | 53 |
| Obstinate, and what the other four longest puzzle answers are? | 62 |
| Obstacle surmounted by Hannibal's army in 218 B.C. | 54 |
| Obsolescent skier's lift with a curved lower part | 53 |
| Obsessive need to check one's email or Facebook, say | 56 |
| Obsession about whether or not to use a certain font? | 53 |
| Observe Black Friday (and a chunk of the eight longest answers) | 63 |
| Observance made official by President Wilson in 1914 | 52 |
| Obliged actor in "The Bridge on the River Kwai"? | 58 |
| Objects of Mr. Jinx's ire, on "Huckleberry Hound" | 63 |
| Object sometimes waved by fans rooting for a series sweep | 57 |
| Object seen just before and after Kane says "Rosebud" | 63 |
| Object of Orsino's affection in "Twelfth Night" | 61 |
| Object of Oliver Twist's request for "more" | 57 |
| Object of many a hopeful machine inventor's search | 54 |
| Object of Clark's love on "Smallville" | 52 |
| Object of a Stockholm syndrome sufferer's affection | 55 |
| Object in an apocryphal story about Christopher Columbus | 56 |
| Obi-Wan Kenobi actor's thoughts about Gregory Hines? | 56 |
| Obeys a neatnik pirate's command regarding the deck | 55 |
| Oberon's wife in "A Midsummer Night's Dream" | 62 |
| Obama, Biden or McCain (but not Palin), in 2008: Abbr. | 54 |
| Obama's favorite character on "The Wire" | 54 |
| Obama whose Secret Service code name is "Rosebud" | 59 |
| Obama daughter whose Secret Service code name is "Rosebud" | 68 |
| Obama daughter whose Secret Service code name is "Radiance" | 69 |
| Oater actor Joel with two stars on the Hollywood Walk of Fame | 61 |
| Oakland-raised writer of "there is no there there" | 60 |
| O. Henry award winner for "Shut a Final Door" | 55 |
| O. Henry Award winner for "Livvie Is Back" | 52 |
| O-___ Ishii (Lucy Liu's role in "Kill Bill") | 58 |
| O(ne of si)x (for a h)e(xago)n (or five for a pyrami)d | 54 |
| O'Toole who played Lola in the TV musical "Copacabana" | 68 |
| O'Neill's "___ for the Misbegotten" | 53 |
| O'Neill's "___ for the Misbegotten'' | 57 |
| O'Neill's "__ for the Misbegotten" | 52 |
| O'Neill's "Long Day's Journey ___ Night" | 62 |
| O'Keeffe's "Farmhouse Window and ___" | 55 |
| O'Flaherty's Gypo in "The Informer" | 53 |
| O'Faolain novel "A Nest of Simple ---" | 52 |
| O'Donnell who started out on "Gimme a Break!" | 59 |
| O'Connor's successor as archbishop of New York | 54 |
| O'Connor who played Gabrielle on "Xena" | 53 |
| O'Connor of "Witness for the Prosecution" | 55 |
| O'Brien's late-night predecessor and successor | 54 |