| One of the degrees | 18 |
| One of the deer hunters in "The Deer Hunter" | 54 |
| One of the deepest lakes in the U.S. | 36 |
| One of the Declaration's 56 | 31 |
| One of the decks | 16 |
| One of the Decade Volcanoes | 27 |
| One of the Deans | 16 |
| One of the deadly sins | 22 |
| One of the de Milles | 20 |
| One of the Days | 15 |
| One of the dancing Astaires | 27 |
| One of the Danaides | 19 |
| One of the Dalys | 16 |
| One of the Dakotas | 18 |
| One of the Dakota | 17 |
| One of the dactyls | 18 |
| One of the D.A.'s people | 28 |
| One of the D's in D.D.E. | 28 |
| One of the d's in "3-D" | 37 |
| One of the czars | 16 |
| One of the Cyclades islands | 27 |
| One of the Cyclades | 19 |
| One of the Culkin brothers | 26 |
| One of the Crusader states | 26 |
| One of the crows | 16 |
| One of the crowd, perhaps | 25 |
| One of the Crimeans | 19 |
| One of the Cratchits | 20 |
| One of the Cowboys, for short | 29 |
| One of the Costanzas, on "Seinfeld" | 45 |
| One of the Cosby kids | 21 |
| One of the corps | 16 |
| One of the corners at Four Corners Monument | 43 |
| One of the Corleones (FOR ED anag.) | 35 |
| One of the Corleones | 20 |
| One of the Corleone boys | 24 |
| One of the Coreys on "The Two Coreys" | 47 |
| One of the Coppolas | 19 |
| One of the Copperfields | 23 |
| One of the Cook Islands | 23 |
| One of the convicted Rosenberg spies | 36 |
| One of the continents: Abbr. | 28 |
| One of the continents | 21 |
| One of the Conners on "Roseanne" | 42 |
| One of the conglomerates | 24 |
| One of the compound spots on a leopard | 38 |
| One of the common people | 24 |
| One of the common folk | 22 |
| One of the Colonies: Abbr. | 26 |
| One of the Colonial Colleges, informally | 40 |
| One of the Collinses | 20 |
| One of the Cole family | 22 |
| One of the Coens | 16 |
| One of the Coen brothers | 24 |
| One of the coasts: Abbr. | 24 |
| One of the coasts | 17 |
| One of the co-founders of Wikipedia | 35 |
| One of the Clintons | 19 |
| One of the clergy | 17 |
| One of the clefs | 16 |
| One of the Cleavers | 19 |
| One of the Clauses | 18 |
| One of the classical elements | 29 |
| One of the classical architectural orders | 41 |
| One of the classes | 18 |
| One of the Clarks | 17 |
| One of the Clantons | 19 |
| One of the Clanton brothers | 27 |
| One of the Clanton boys | 23 |
| One of the clan | 15 |
| One of the Clampetts | 20 |
| One of the Cities of the Plain | 30 |
| One of the Cinque Ports | 23 |
| One of the Churchills | 21 |
| One of the Chipmunks | 20 |
| One of the Chinas | 17 |
| One of the Chicago Eight | 24 |
| One of the Chicago Bears | 24 |
| One of the chessmen | 19 |
| One of the Chekhov's ''Three Sisters'' | 58 |
| One of the Chases | 17 |
| One of the Chaplins | 19 |
| One of the Channel Islands | 26 |
| One of the Champions | 20 |
| One of the Challenger astronauts | 32 |
| One of the Central Provinces: Abbr. | 35 |
| One of the Celtic nations | 25 |
| One of the Celtic languages | 27 |
| One of the Cavalier poets | 25 |
| One of the cattlemen | 20 |
| One of the cattle in a cattle drive | 35 |
| One of the cats in "Cats" | 35 |
| One of the Castros | 18 |
| One of the Castles, for short | 29 |
| One of the Cassinis | 19 |
| One of the Cassidy boys | 23 |
| One of the Cartwrights | 22 |
| One of the Cartwright boys | 26 |
| One of the Carters | 18 |
| One of the Carsons | 18 |