| Team | Player |
|---|---|
| CB | Jay O'Brien |
| --- | Shane O'Brien |
| --- | Sean O'Donnell |
| --- | Brian O'Neill |
| --- | Jeff O'Neill |
| ND | Ryan O'Reilly (C) |
| CB | Ryan O'Rourke |
| --- | Patrick O'Sullivan |
| --- | Johnny Oduya |
| MICH | Jake Oettinger (G) |
| TB | Liam Ohgren |
| --- | Mattias Ohlund |
| POR | Kyle Okposo (RW) |
| TB | Oskar Olausson |
| VAN | Jamie Oleksiak (D) |
| --- | Rostislav Olesz |
| EDM | Victor Olofsson (RW) |
| BRA | Anton Olsson |
| --- | Ben Ondrus |
| BRA | Dmitry Orlov (D) |
| --- | Brooks Orpik |
| --- | Chris Osgood |
| --- | T.J. Oshie |
| FW | Noah Ostlund |
| SOO | Brennan Othmann (LW) |
| --- | Steve Ott |
| --- | Michel Ouellet |
| --- | Xavier Ouellet |
| OVW | Alex Ovechkin (LW) |
| --- | Sandis Ozolinsh |