| Player | Position | Last Season | Birthdate | Country |
| O'Brien, Shane | D | 2012-2013 | 08/09/1983 | CAN |
| O'Byrne, Ryan | D | 2012-2013 | 07/19/1984 | CAN |
| O'Neill, Wes | D | 2009-2010 | 03/03/1986 | CAN |
| O'Reilly, Ryan | C | 2012-2013 | 02/07/1991 | CAN |
| Obsut, Jaroslav | D | 2001-2002 | 09/03/1976 | SVK |
| Odgers, Jeff | R | 2002-2003 | 05/31/1969 | CAN |
| Ogrodnick, John | L | 1992-1993 | 06/20/1959 | CAN |
| Olver, Mark | C | 2012-2013 | 01/01/1988 | CAN |
| Ozolinsh, Sandis | D | 2007-2008 | 08/03/1972 | LVA |