| Order to the person holding the deck of cards | 45 |
| Ordered group of numbers in math | 32 |
| Ordered room service, for example | 33 |
| Ordered sets of arbitrary length, in math | 41 |
| Orderly phrase that can follow one, two or three | 48 |
| Orderly supervisor, maybe: Abbr. | 32 |
| Orders of "draw one" at a diner | 41 |
| Orders to attack in the evening? | 32 |
| Orders to attack, with "on" | 37 |
| Ordinal number ending, sometimes | 32 |
| Ordinal numbers in Los Angeles, e.g. | 36 |
| Ordinal that kind of seems fake but isn't | 45 |
| Ordinance about blasting debris? | 32 |
| Ordinary guy who drinks half as much? | 37 |
| Ordinary items used in education | 32 |
| Ordinary transport to Ms. Mansfield? | 36 |
| Ore-__, maker of frozen potatoes | 32 |
| Oread in love with her own voice | 32 |
| Oregon and Idaho's ___ Canyon | 33 |
| Oregon city named for a famous fur trader | 41 |
| Oregon city near the mouth of the Columbia | 42 |
| Oregon city, with "The" | 33 |
| Oregon graduates in vulcanization? | 34 |
| Oregon Shakespeare Festival locale | 34 |
| Oregon's state tree, for one | 32 |
| Oregon’s “Emerald City” | 35 |
| Orff's "___ Burana" | 33 |
| Org. adding the Seattle Sounders FC in 2009 | 43 |
| Org. affiliated with the College World Series | 45 |
| Org. against eating meat and wearing fur | 40 |
| Org. against workplace discrimination | 37 |
| Org. Ally McBeal would belong to, were she real | 47 |
| Org. always headed by a U.S. general or admiral | 47 |
| Org. asking "Where's the beef?" | 45 |
| Org. associated with U.S. Cyber Command | 39 |
| Org. based in Fort Meade, Maryland | 34 |
| Org. based in Palm Beach Gardens | 32 |
| Org. based in Palm Beach Gardens, Florida | 41 |
| Org. behind "100 Years, 100 Movies" | 45 |
| Org. behind the 2004 Games in Athens | 36 |
| Org. behind the No Child Left Behind Act | 40 |
| Org. called by stranded motorists | 33 |
| Org. celebrating 56 years in 2005 | 33 |
| Org. celebrating 65 years in 2014 | 33 |
| Org. central to a 1999 Seattle protest | 38 |
| Org. chaired by Jane Alexander in the '90s | 46 |
| Org. Charlton Heston presided over | 34 |
| Org. co-founded by Babe Didrikson Zaharias | 42 |
| Org. co-founded by Babe Zaharias | 32 |
| Org. co-founded by Felix Frankfurter | 36 |
| Org. co-founded by Gen. George Wingate | 38 |
| Org. co-founded by Victor Herbert | 33 |
| Org. co-founded by W. E. B. Du Bois | 35 |
| Org. concerned with animal rights | 33 |
| Org. concerned with asbestos stds. | 34 |
| Org. concerned with blood-alcohol limits | 40 |
| Org. concerned with boxer safety | 32 |
| Org. concerned with bridges and canals | 38 |
| Org. concerned with canine health | 33 |
| Org. concerned with carpal tunnel syndrome | 42 |
| Org. concerned with climate change | 34 |
| Org. concerned with composers' rights | 41 |
| Org. concerned with course work? | 32 |
| Org. concerned with court proceedings? | 38 |
| Org. concerned with firing practices? | 37 |
| Org. concerned with global warming | 34 |
| Org. concerned with greenhouse gas | 34 |
| Org. concerned with greenhouse gases | 36 |
| Org. concerned with handicap issues | 35 |
| Org. concerned with hazardous waste | 35 |
| Org. concerned with human rights | 32 |
| Org. concerned with illegal activity | 36 |
| Org. concerned with infectious agents | 37 |
| Org. concerned with intelligence | 32 |
| Org. concerned with liability reform | 36 |
| Org. concerned with mercury in fish | 35 |
| Org. concerned with national defence | 36 |
| Org. concerned with noise pollution | 35 |
| Org. concerned with privacy laws | 32 |
| Org. concerned with safe drinking water | 39 |
| Org. concerned with sleepy pilots | 33 |
| Org. concerned with TB prevention | 33 |
| Org. concerned with the BP oil spill | 36 |
| Org. concerned with the correct approach | 40 |
| Org. concerned with the No Child Left Behind Act | 48 |
| Org. concerned with whistleblower laws | 38 |
| Org. concerned with working conditions | 38 |
| Org. concerned with workplace injuries | 38 |
| Org. conducting airport searches | 32 |
| Org. created by the 1947 National Security Act | 46 |
| Org. created by the 1964 Civil Rights Act | 41 |
| Org. created by the Banking Act of 1933 | 39 |
| Org. created right after the cold war | 37 |
| Org. created under the Nixon administration | 43 |
| Org. created, aptly enough, in secret | 37 |
| Org. criticized in "Sicko" | 36 |
| Org. currently headed by Michele Leonhart | 41 |
| Org. defending the Second Amendment | 35 |
| Org. depicted in "Apollo 13" | 38 |
| Org. discussed in the 1993 Oslo Accords | 39 |