| Last Name | First Name | M.I. | Rank | Service/Serial # | Branch | War/Conflict | Cemetery/Memorial | Entered From | Unit |
|---|---|---|---|---|---|---|---|---|---|
| Oppenheimer | Morton | Private | 13098074 | U.S. Army | World War II | East Coast Memorial | Pennsylvania | ||
| Oren | Clifford | J. | Private | 32142533 | U.S. Army Air Forces | World War II | East Coast Memorial | New York | Air Corps |
| Orlomoski | William | E. | Private | 36364838 | U.S. Army Air Forces | World War II | East Coast Memorial | Illinois | Air Corps |
| Ormand | Kelly | C. | Seaman First Class | 5765136 | U.S. Navy | World War II | East Coast Memorial | Texas | United States Naval Reserve |
| Ornot | Alex | R. | Private First Class | 33263251 | U.S. Army | World War II | East Coast Memorial | Pennsylvania | Coast Artillery Corps |
| Orsulak | Paul | J. | Technical Sergeant | 33345251 | U.S. Army Air Forces | World War II | East Coast Memorial | Pennsylvania | 563rd Bomber Squadron, 388th Bomber Group, Heavy |
| Orton | Hubert | L. | Seaman Second Class | 8079586 | U.S. Navy | World War II | East Coast Memorial | Connecticut | United States Naval Reserve |
| Orzada | Thomas | J. | Second Lieutenant | 0-737220 | U.S. Army Air Forces | World War II | East Coast Memorial | Illinois | 52nd Fighter Squadron, 32nd Fighter Group |
| Osier | Leuign | W. | Chief Machinist's Mate | 222847 | U.S. Coast Guard | World War II | East Coast Memorial | New York | |
| Osner | John | W. | Second Lieutenant | 2060571 | U.S. Army Air Forces | World War II | East Coast Memorial | Missouri | 6th Bomber Squadron, 29th Bomber Group, Very Heavy |