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Players |
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
| O | ||
| Name | Team | Pos |
| Ryan O'Callaghan | Kansas City | T |
| Jake O'Connell | Kansas City | TE |
| Kevin O'Connell | New York | QB |
| Shaun O'Hara | New York | C |
| Deltha O'Neal | Houston | CB |
| Oren O'Neal | Oakland | RB |
| J.T. O'Sullivan | Cincinnati | QB |
| Cyril Obiozor | Green Bay | LB |
| Ben Obomanu | Seattle | WR |
| Chad Ochocinco | Cincinnati | WR |
| Steve Octavien | Dallas | LB |
| Antwan Odom | Cincinnati | DE |
| Chris Ogbonnaya | St. Louis | RB |
| Evan Oglesby | Baltimore | CB |
| Kevin Ogletree | Dallas | WR |
| Adewale Ogunleye | Chicago | DE |
| Michael Oher | Baltimore | T |
| Rich Ohrnberger | New England | G |
| Quinn Ojinnaka | Atlanta | T |
| Frank Okam | Houston | DT |
| Chike Okeafor | Arizona | LB |
| Amobi Okoye | Houston | DT |
| Michael Okwo | Indianapolis | LB |
| Clint Oldenburg | Washington | T |
| Shane Olivea | New York | G |
| Paul Oliver | San Diego | S |
| Greg Olsen | Chicago | TE |
| Seth Olsen | Denver | G |
| Igor Olshansky | Dallas | DE |
| Frank Omiyale | Chicago | G |
| Xavier Omon | Seattle | RB |
| Kenny Onatolu | Minnesota | LB |
| Brian Orakpo | Washington | LB |
| Dan Orlovsky | Houston | QB |
| Buck Ortega | New Orleans | TE |
| Kyle Orton | Denver | QB |
| Kassim Osgood | San Diego | WR |
| Babatunde Oshinowo | San Francisco | DT |
| Jeff Otah | Carolina | T |
| Jeff Otis | St. Louis | QB |
| Mike Otto | Tennessee | T |
| Christopher Owens | Atlanta | CB |
| John Owens | Seattle | TE |
| Montell Owens | Jacksonville | RB |
| Richard Owens | New York | TE |
| Terrell Owens | Buffalo | WR |
