| Orpheus' strings | 20 |
| Orpheus's instrument | 24 |
| Orpheus's route | 19 |
| Orpheus, as a musician | 22 |
| Orpheus, for one | 16 |
| Orpheus, Heracles et al | 23 |
| Orpheus, in search of Eurydice | 30 |
| Orpheus, musically | 18 |
| Orpheus, notably | 16 |
| Orpheus-Eurydice tale, e.g. | 27 |
| Orphic hymn charmer | 19 |
| Orphic instruments | 18 |
| Orpine | 6 |
| Orquesta tÃpica pieces | 25 |
| Orr | 3 |
| Orr colleague, familiarly | 25 |
| Orr milieu | 10 |
| Orr org. | 8 |
| Orr score | 9 |
| Orr teammate, familiarly | 24 |
| Orr teammate, for short | 23 |
| Orr was one | 11 |
| Orr's old org. | 18 |
| Orr's orbit: abbr. | 22 |
| Orr's org. | 14 |
| Orrery component | 16 |
| Orrery element | 14 |
| Orrery item | 11 |
| Orrery orb | 10 |
| Orrery units | 12 |
| Orrin Hatch's state | 23 |
| Orrin Hatch, for one (abbr.) | 28 |
| Orrin of the Senate | 19 |
| Orsk is on it | 13 |
| Orsk's river | 16 |
| Orsk's stream | 17 |
| Orson | 5 |
| Orson "Bright ___" | 28 |
| Orson adapted her "Immortal Story" for the screen | 59 |
| Orson or Andy | 13 |
| Orson or lima | 13 |
| Orson Scott Card protagonist | 28 |
| Orson Scott Card's "___ Game" | 43 |
| Orson Scott Card's "____ Game" | 44 |
| Orson Welles called him "The Great One" | 49 |
| Orson Welles film | 17 |
| Orson Welles role | 17 |
| Orson Welles role in "The Third Man" | 46 |
| Orson Welles role of 1972 | 25 |
| Orson Welles studio | 19 |
| Orson Welles' birthplace | 28 |
| Orson Welles's birthplace | 29 |
| Orson Welles's old studio | 29 |
| Orson Welles's Wisconsin birthplace | 39 |
| Orson's favorite legume? | 28 |
| Orson's planet | 18 |
| Orson's planet in 70's TV | 33 |
| Orson, e.g., in a '70s-'80s sitcom | 42 |
| Orson, famously | 15 |
| Orson: "Bright ___" | 29 |
| Orsova's river | 18 |
| Ort | 3 |
| ORT is one | 10 |
| Ort of a sort | 13 |
| Ortega or Defoe | 15 |
| Ortega y ___ | 12 |
| Ortega's "other" | 30 |
| Ortho product | 13 |
| Orthodontia concern | 19 |
| Orthodontic add-ons | 19 |
| Orthodontic aids | 16 |
| Orthodontic challenges | 22 |
| Orthodontic concern | 19 |
| Orthodontic device | 18 |
| Orthodontic device for separating teeth | 39 |
| Orthodontic gadget | 18 |
| Orthodontic need | 16 |
| Orthodontic option | 18 |
| Orthodontist's bay? | 23 |
| Orthodontist's challenge | 28 |
| Orthodontist's concern | 26 |
| Orthodontist's concerns | 27 |
| Orthodontist's creation | 27 |
| Orthodontist's deg. | 23 |
| Orthodontist's degree | 25 |
| Orthodontist's degree: Abbr. | 32 |
| Orthodontist's diagnosis | 28 |
| Orthodontist's diagnosis, sometimes | 39 |
| Orthodontist's fee? | 23 |
| Orthodontist's grp. | 23 |
| Orthodontist's job | 22 |
| Orthodontist's offering | 27 |
| Orthodontist's org. | 23 |
| Orthodontist's rubber band | 30 |
| Orthodontist's rubber bands | 31 |
| Orthodontist's shots | 24 |
| Orthodontist, at times | 22 |
| Orthodontist, for one: Abbr. | 28 |
| Orthodontists' org. | 23 |
| Orthodox | 8 |