| Name | Rank | Number | Branch | Date | Award |
|---|---|---|---|---|---|
| O'BRIEN, John Barry | A/LCdr | RCNVR | 10-Jun-1944 | MID | |
| O'BRIEN, John Gerald | A/CERA 3/c | V-48991 | RCNVR | 9-Sep-1944 | MID |
| O'CONNELL, Leslie James | A/CPO (TC) | V-17598 | RCNVR | 5-Jan-1946 | MID |
| O'HAGAN, Denis James Patrick | Lieutenant | RCNVR | 17-Jun-1941 | GM | |
| O'HAGAN, Denis James Patrick | A/LCdr | RCNVR | 9-Jun-1942 | GM2 | |
| O'HARA, George Dennis | A/Ldg Tele | V-14328 | RCNVR | 20-Jan-1945 | MID |
| O'HARA, Ian Wallace | OS | V-5908 | RCNVR | 4-Nov-1941 | MID |
| O'LEARY, Charles Murtough | A/Cdr (E) | RCNR | 10-Jun-1944 | OBE | |
| OBERSON, Donald Warner | Tele (SO) | V-52614 | RCNVR | 16-Jun-1945 | MID |
| ODLING, Gosta William | Stoker 1/c | V-41103 | RCNVR | 30-Mar-1946 | MID |
| OLAND, John Eric Wodehouse | Lieutenant | RCN | 11-Aug-1919 | DSC | |
| OLAND, Richard Hibbert | Cdr | RCN | 1-Jul-1941 | OBE | |
| OLIPHANT, William | A/Ldg Stoker | V-13893 | RCNVR | 8-Jan-1944 | MID |
| ONESCHUK, William | Ldg Sick Berth Attendant | V-34142 | RCNVR | 24-Mar-1945 | MID |
| ORTON, Alfred Thomas | A/PO | 4050 | RCN | 20-Jan-1945 | MID |
| OSBORNE, Fred Francis | Lt | RCNR | 10-Jun-1944 | MID | |
| OSBORNE, Jack Dunlop | Lt | RCNR | 14-Aug-1945 | MID | |
| OSBURN, Anthony George | Lt | RCNVR | 21-Nov-1942 | MID | |
| OUELLETTE, Rodger J. | PO | V-19149 | RCNVR | 16-Jun-1945 | MID |
| OUTHET, Murray McLaren | Lt | RCNVR | 24-Nov-1945 | MID | |
| OWEN, Vivian Wilson | A/LPatrolman | A-6109 | RCN | 5-Jan-1946 | Commendation |
| OWENS, Joseph | Stoker PO | A-4046 | RCNR | 6-Jan-1945 | MID |
| OXNER, Albert Vincent | A/PO (S) | A-1802 | RCNR | 8-Jan-1944 | BEM |