| Ober | Wm | Minor | Cherryhill | |
| O'Brien | Charles | A | Disabiltiy | W Mahoning Twp |
| Oharra | Harrison | Disability | Montgomery Twp | |
| Oliher | John | Disability | Rayne Twp | |
| Oliver | J | Postmaster | Young Twp | |
| Oltabeaut | F | Minor in Sevice | W Mahoning Twp | |
| O'Nail | John | Disability | Greene Twp | |
| Organ | James | Disability | Canoe Twp | |
| Orner | Ephraim | Disability | Pine Twp | |
| Orner | George | D D | Minor | Pine Twp |
| Orr | F | Minister | Jacksonville Borough | |
| Orr | J | W | Minor in Service | Washington Twp |
| Orr | James | W | Disability | Washington Twp |
| Orr | Robert | Minor in service | Indiana Borough | |
| Overdorf | Francis | Discharged | Brushvalley Twp | |
| Overdorf | Frank | Minor in Service | Brushvalley Twp | |
| Overdorf | Harrison | Minor in Service | Brushvalley Twp | |
| Overdorf | Isaac | Disability | Brushvalley Twp | |
| Overdorf | Ruben | Discharged | Brushvalley Twp | |
| Overdorf | Wm | Minor | W Wheatfield |
Indiana County, PA