Ohio Residents Casualties in the Korean War - O
| Name | Rank / Grade | Branch | Home of record City / County | Date of Casualty | Type of Casualty | |
| | OBEE MELVIN DALE | SO2 | NAVY | WHITEHOUSE | 07 OCT 1951 | KILLED IN ACTION
| | OBRIEN ROBERT W | PVT | ARMY | DARKE | 25 APR 1951 | KILLED IN ACTION
| | OBRINGER CARL JR | PFC | ARMY | MIAMI | 07 OCT 1951 | KILLED IN ACTION
| | OBROVAC NICHOLAS | SFC | ARMY | STARK | 15 JUL 1953 | KILLED IN ACTION
| | ODELL ERNEST R | PVT | ARMY | HAMILTON | 10 JUL 1950 | KILLED IN ACTION
| | OGLESBEE JAMES A | PVT | ARMY | PORTAGE | 17 SEP 1950 | KILLED IN ACTION
| | OHARA THOMAS J | PFC | ARMY | MAHONING | 27 NOV 1950 | DIED WHILE CAPTURED
| | OHL DAVID J | CPL | MARINES | POLAND | 25 JAN 1951 | KILLED IN ACTION
| | OILER WILLIAM R | CPL | ARMY | MONTGOMERY | 28 NOV 1950 | DIED WHILE MISSING
| | OLENICK PAUL EUGENE | CPL | MARINES | MASSILLON | 25 APR 1951 | DIED OF WOUNDS
| | OLESINSKI ROBERT D | PFC | ARMY | CUYAHOGA | 01 DEC 1950 | DIED WHILE CAPTURED
| | OLLOM CHARLES L | PFC | ARMY | CUYAHOGA | 07 SEP 1951 | KILLED IN ACTION
| | OMALLEY WILLIAM T | CPL | ARMY | LAKE | 02 NOV 1950 | DIED WHILE MISSING
| | ONTKO EDWARD JOSEPH | PFC | MARINES | STRUTHERS | 05 OCT 1950 | DIED OF WOUNDS
| | ORMOND ROBERT J | MAJ | ARMY | HAMILTON | 02 NOV 1950 | DIED OF WOUNDS
| | ORNDORFF EDWARD D | PFC | ARMY | HAMILTON | 04 FEB 1951 | KILLED IN ACTION
| | OROARK RICHARD L | PFC | ARMY | MIAMI | 14 JUL 1953 | DIED OF WOUNDS
| | OSBORN DONALD G | PFC | ARMY | CUYAHOGA | 03 OCT 1951 | KILLED IN ACTION
| | OTIS WILLIAM E JR | 2LT | ARMY | CUYAHOGA | 11 SEP 1950 | KILLED IN ACTION
| | OTOOLE DAMIAN FIDELIS | SGT | AIR FORCE | LANCASTER | 31 DEC 1953 | KILLED IN ACTION
| | OTT JOHN E | PFC | ARMY | ROSS | 04 SEP 1950 | KILLED IN ACTION
| | OTT ROBERT T | CPL | ARMY | KNOX | 02 DEC 1950 | DIED WHILE MISSING
| | OTTO AMEN P | CPL | ARMY | LAKE | 20 SEP 1950 | KILLED IN ACTION
| | OWENS CARL HUBERT | PVT | MARINES | MANSFIELD | 06 OCT 1952 | KILLED IN ACTION
| | OWENS FRANKLIN A | PFC | ARMY | BELMONT | 29 NOV 1950 | DIED WHILE MISSING
| | OWENS VOLA J | PFC | ARMY | HAMILTON | 05 JUL 1950 | KILLED IN ACTION
|
| | |
|