| Player | Position | Last Season | Birthdate | Country |
| O'Donnell, Sean | D | 2011-2012 | 10/13/1971 | CAN |
| Oates, Adam | C | 2003-2004 | 08/27/1962 | CAN |
| Odjick, Gino | L | 2001-2002 | 09/07/1970 | CAN |
| Osburn, Randy | L | 1974-1975 | 11/26/1952 | CAN |
| Otto, Joel | C | 1997-1998 | 10/29/1961 | USA |
| Ouellet, Maxime | G | 2005-2006 | 06/17/1981 | CAN |