| One of the Pillars of Islam | 27 |
| One of the Pine Islands | 23 |
| One of the Pirates | 18 |
| One of the Pirates of Penzance | 30 |
| One of the plagues | 18 |
| One of the Plain People | 23 |
| One of the Planeten | 19 |
| One of the planets | 18 |
| One of the Pleiades | 19 |
| One of the Pleiades with a month named after her | 48 |
| One of the Plinys | 17 |
| One of the Pointer Sisters | 26 |
| One of the Poles | 16 |
| One of the Ponderosa boys | 25 |
| One of the pool balls | 21 |
| One of the pool ends | 20 |
| One of the Poor Clares | 22 |
| One of the Power Rangers | 24 |
| One of the Prairie Provinces | 28 |
| One of the Presleys | 19 |
| One of the prexy's staff | 28 |
| One of the pride of Joy | 23 |
| One of the primal gods in Greek myth | 36 |
| One of the primates | 19 |
| One of the Princetonians | 24 |
| One of the principles of Kwanzaa | 32 |
| One of the Prize guys | 21 |
| One of the Prozorov sisters | 27 |
| One of the Quad Cities | 22 |
| One of the Quad Cities, in Illinois | 35 |
| One of the Quechuan people | 26 |
| One of the Queen's pets | 27 |
| One of the R's in J.R.R. Tolkien | 36 |
| One of the R's in the USSR | 30 |
| One of the R's of R&R | 29 |
| One of the R's, synonymously | 32 |
| One of the races | 16 |
| One of the Radcliffe graduates | 30 |
| One of the rails | 16 |
| One of The Ramones | 18 |
| One of the Rams' QB's | 29 |
| One of the rappers | 18 |
| One of the rare earths | 22 |
| One of the Rat Pack | 19 |
| One of the ratites | 18 |
| One of the Rayong throng | 24 |
| One of the Reagans | 18 |
| One of the recent frosh | 23 |
| One of the red Monopoly spaces | 30 |
| One of the Red Sox pitchers | 27 |
| One of the Redgrave sisters | 27 |
| One of the Redgraves | 20 |
| One of the Reds' rivals | 27 |
| One of the reeds | 16 |
| One of the ref's set | 24 |
| One of the Reiners | 18 |
| One of the reputed Dead Sea Scrolls authors | 43 |
| One of the reputed Dead Sea Scrolls writers | 43 |
| One of the Rhine Maidens | 24 |
| One of the Rice Krispies elves | 30 |
| One of the Rice Krispies sounds | 31 |
| One of the Righteous Brothers | 29 |
| One of the Ringling Brothers | 28 |
| One of the Ritters | 18 |
| One of the rivers near Three Rivers Stadium | 43 |
| One of the rivers of Hades | 26 |
| One of the rivers of Three Rivers Stadium | 41 |
| One of the Robins | 17 |
| One of the Rockefellers | 23 |
| One of the Rolling Stones | 25 |
| One of the Roman Fates | 22 |
| One of the Romneys | 18 |
| One of the Roosevelts | 21 |
| One of the Rosenbergs | 21 |
| One of the Round Table knights | 30 |
| One of the Rover Boys | 21 |
| One of the Royal Family | 23 |
| One of the Royals? | 18 |
| One of the Rushmore quartet | 27 |
| One of the S's in SST | 25 |
| One of the S's in U.S.S. | 28 |
| One of the S.S.R.s | 18 |
| One of the Saarinens | 20 |
| One of the Saarinens of Finland | 31 |
| One of the sacraments | 21 |
| One of the sales force | 22 |
| One of the sales staff | 22 |
| One of the same bloodline | 25 |
| One of the San Juan Islands | 27 |
| One of the sandbox set | 22 |
| One of the saner kids on "South Park" | 47 |
| One of the Santas | 17 |
| One of the sciences | 19 |
| One of the Scottish gentry | 26 |
| One of the Scotts | 17 |
| One of the Scraggs in "Li'l Abner" | 48 |
| One of the seals | 16 |
| One of the senses | 17 |
| One of the services: Abbr. | 26 |
| One of the Setons | 17 |