Indiana Servicemen/O Surnames
This list is not complete by any means. If you find a mistake or have an ancestor not listed, please email me and I will correct the entry or add your family right away. If you would like to add a photo, information about his/her service or documents, email me and I will build a page for them.
| Name | County | Rank | Branch | War |
|---|---|---|---|---|
| O'Bannon, Robert E. | Greene County | PFC | WWII | |
| O'Brien, Charles | Floyd County | TSG | WWII | |
| O'Brien, George T. | Wells County | CPL | WWII | |
| O'Brien, John W. | Marion County | 2LT | WWII | |
| O'Brien, Melvin R. | Allen County | 1LT | WWII | |
| O'Bryant, John W. | Delaware County | PFC | WWII | |
| O'Callahan, John J. | Marion County | PVT | WWII | |
| O'Callahan, Thomas D. | Marion County | PVT | WWII | |
| O'Connor, Edward T. | Daviess County | TSG | WWII | |
| O'Connor, Jack M. | Marshall County | WWII | ||
| O'Connor, Maurice | Montgomery County | WWI | ||
| O'Donnell, Charles J. | Marion County | CPL | WWII | |
| O'Donnell, Neil | Hendricks County | WWI | ||
| O'Donnell, Roger M. | Hendricks County | WWI | ||
| O'Dorne, Edward A. | Marshall County | SSG | WWII | |
| O'fer, John H. | Clark County | PVT | WWII | |
| O'Hair, Orville S. | Putnam County | WWII | ||
| O'Hern, Connie A. | Clay County | PVT | WWII | |
| O'Hern, Connie A. | Parke County | WWII | ||
| O'Neal, Charles W. | Howard County | TEC5 | WWII | |
| O'Neal, Noland L. | Hendricks County | 2LT | WWII | |
| O'Neal, Owen T. | Vigo County | CPL | WWII | |
| O'Neal, William Q. | Montgomery County | WWI | ||
| O'Neall, Dallas B. | Greene County | SSG | WWII | |
| O'Neall, William O. | Montgomery County | 2LT | WWII | |
| O'Neil, Edward W. | Delaware County | PVT | WWII | |
| O'Rear, William E. | Vigo County | CPL | WWII | |
| O'Reare, Howard E. | Hamilton County | TSG | WWII | |
| O'Rourke, Edward J. | Lake County | PFC | WWII | |
| O'Rourke, Stephen F. | Allen County | PVT | WWII | |
| Oakes, Cecil R. | Allen County | 1LT | WWII | |
| Oakley, Benjamin T. | Marion County | PFC | WWII | |
| Oakman, John | Fulton County | WWI | ||
| Oberlin, Carl L. | Dekalb County | PVT | WWII | |
| Oberlin, Joseph W. | De Kalb County | Lieutenant Junior Grade | WWII | |
| Obermayer, Phillip | Fulton County | WWI | ||
| Oberring, Albert J. | Jackson County | PFC | WWII | |
| Obradovich, Robert | Lake County | SGT | WWII | |
| Odell, Walter W. | Hendricks County | WWI | ||
| Oetting, Elmer C. | Adams County | WWII | ||
| Oexmann, Oscar P. | Knox County | PVT | WWII | |
| Offut, Carl E. | Marion County | PVT | WWII | |
| Offut, Robert H. | Knox County | SGT | WWII | |
| Ogborn, John J. | Washington County | Machinist Mate 1st Class | WWII | |
| Ogden, Hayes | Marion County | PFC | WWII | |
| Ogg, Samuel R. | Wells County | CPL | WWII | |
| Ogle, Kenneth L. | Marion County | LT C | WWII | |
| Ogle, Richard L. | Hancock County | PFC | WWII | |
| Ogle, William S. | Marion County | PFC | WWII | |
| Oiler, Benjamin F. | Clinton County | Civil War | ||
| Olenik, Adolph | Lake County | SSG | WWII | |
| Olentine, Richard M. | White County | Seaman Second Class | Navy | WWII |
| Oliphant, Foster | Owen County | WWI | ||
| Oliphant, Roscoe A. | Decatur County | TEC4 | WWII | |
| Olivadoti, Dominic | Lake County | PVT | WWII | |
| Oliver, Edwin L. | Gibson County | PVT | WWII | |
| Oliver, Jacob R. | Jackson County | CORP | Civil War | |
| Olsen, August H. Sr. | Lake County | TSG | WWII | |
| Oman, H. C. | Whitley County | Civil War | ||
| Omen, Glen C. | Tippecanoe County | SGT | WWII | |
| Omo, Harold F. | Allen County | Aviation Ordnanceman First Class | WWII | |
| Ooley, Wilbert H. | Putnam County | SSG | WWII | |
| Oplinger, Harold W. | Allen County | PFC | WWII | |
| Oprisko, John E. | Lake County | TSG | WWII | |
| Ordun, Maurice | Laporte County | 1LT | WWII | |
| Orem, Donald D. | Clinton County | PFC | WWII | |
| Orlop, Jack B. | Marion County | 2LT | WWII | |
| Ormsby, Jeremiah | Fulton County | WWI | ||
| Orrick, Jasper H. | Montgomery County | WWI | ||
| Orrill, Harold W. | Jefferson County | PFC | WWII | |
| Orth, Donald J. | Lake County | 2LT | WWII | |
| Orwig, Paul G. | Porter County | 2LT | WWII | |
| Osborn, Charles E. | Dearborn County | WWI | ||
| Osborn, Ralph E. | Lake County | PVT | WWII | |
| Osborne, Barry L. | Hendricks County | Vietnam | ||
| Osborne, Frank D. | Vigo County | 2LT | WWII | |
| Osborne, George T. | Vanderburgh County | PVT | WWII | |
| Osborne, Howard | Monroe County | PVT | WWII | |
| Osborne, Howard A. | Jackson County | Air Force | ||
| Osborne, James | Fulton County | WWI | ||
| Osburn, William E. | Grant County | 2LT | WWII | |
| Oscatharp, B. H. Jr. | Pike County | SGT | WWII | |
| Oshanick, John | Lake County | PFC | WWII | |
| Osonick, Michael | Lake County | SSG | WWII | |
| Ossenberg, W.A. Jr. | Vanderburgh County | PFC | WWII | |
| Osszewski, Henry W. | Lake County | PFC | WWII | |
| Ostendorf, Joseph E. | Knox County | PVT | WWII | |
| Osterhage, Robert | Marion County | CPL | WWII | |
| Ostler, William | Clinton County | Civil War | ||
| Ostrander, Howard P. | Starke County | TEC4 | WWII | |
| Ostrander, Raymond R. | Noble County | TEC4 | WWII | |
| Oswald, Byron J. | Allen County | PFC | WWII | |
| Oswald, Robert B. | Allen County | 2LT | WWII | |
| Oswalt, Ralph | Montgomery County | CPL | WWII | |
| Ott, Lyle C. | Noble County | PVT | WWII | |
| Ottee, John H. | Jackson County | Recruit | Civil War | |
| Ottenbacher, Samuel E. | Hamilton County | Aviation Radioman Third Class | WWII | |
| Otterman, Marvin M. | Montgomery County | WWI | ||
| Otterman, William | Montgomery County | CAPT | WWII | |
| Ottinger, Herman D. | Fountain County | PVT | WWII | |
| Ottman, John | Clinton County | Civil War | ||
| Overder, Louis N. | Vanderburgh County | PVT | WWII | |
| Overly, Carl E. | Tippecanoe County | WWI | ||
| Overman, Patrick H. | Greene County | 1LT | WWII | |
| Overpeck, James H. | Parke County | Vietnam | ||
| Overton, Cecil G. | Posey County | PFC | WWII | |
| Owen, Earl | Montgomery County | WWI | ||
| Owens, Claude C. | Vanderburgh County | PFC | WWII | |
| Owens, Clifford E. | Tippecanoe County | SSG | WWII | |
| Owens, Elmer E. | Scott County | PFC | WWII | |
| Owens, Fred A. | Gibson County | CAPT | WWII | |
| Owens, Glen F. | Porter County | Seaman Second Class Navy WWII | ||
| Owens, James R. | Dubois County | Electricians Mate Second Class | WWII | |
| Owens, James W. | Floyd County | CPL | WWII | |
| Owens, John N. | Jackson County | Major General | Army | WWII |
| Owens, Robert D. | Dearborn County | CAPT | WWII | |
| Owens, Robert J. | Putnam County | SGT | WWII | |
| Owens, William E. | Jackson County | PVT | Civil War | |
| Owens, William F. | Lawrence County | Machinists Mate Second Class | WWII | |
| Owens, William L. | Tippecanoe County | WWI | ||
| Owens,Israel B. | Jackson County | SGT | Civil War | |
| Ozmann, Louis | Marion County | PVT | WWII | |
| Ozug, John F. | Lake County | PVT | WWII |