Players list with last name beginning with O
By owner
| Jake Oettinger | G |  | Simon Vigneau | pro team | |||
| Chris Osgood | G | ||||||
| Xavier Ouellet | D | ||||||
| Mattias Ohlund | D | ||||||
| Sandis Ozolinsh | D | ||||||
| Jamie Oleksiak | D |  | |||||
| Dmitry Orlov | D |  | |||||
| Michel Ouellet | A | ||||||
| Victor Olofsson | A |  | |||||
| Patrick O'Sullivan | A | ||||||
| Ryan O'Reilly | A |  | Camil Cléroux | pro team | |||
| T.J. Oshie | A |  | Marc Parent | farm team | |||
| Alex Ovechkin | A | | Mario Raymond | farm team | |||
| Jeff O'Neill | A | ||||||
| Kyle Okposo | A | |
