| | Name | Rank | ASN | Unit | Campaign | | Orange, Sidney J. | | | 823 TD/Hq | |
| Orban, Robert E. | Pfc | 33804609 | 119/Unk Co | |
| Orczyk, Stanley T. | | 33691718 | 120 | |
| Ordille, Genarino W. | SSgt | | 117/1st/Hq | N,NF,R,A |
| Ordille, Samuel J. | Cpl | | 117/1st/Hq | N,NF,R,A,CE |
| Ordonez, Florencio V. | | | 120/Unk Co | |
| Ordung, Arthur H. | Cpl | | 119/Unk Co | |
| Ore, Tommy J. | Pfc | | 117/A | NF,R |
| Orecchio, Frank C. | Pfc | 32918040 | 120/Unk Co | |
| Orem, Daniel W. | Pfc | 33900591 | 119/Unk Co | |
| Orena, Ramiro J. | Pfc | | 120/Unk Co | |
| Orezyk, Stanley T. | Pvt | | 120/Unk Co | |
| Orf, Richard F. | Pfc | | 117 | |
| Orgain, Elwyn, O. | Sgt | 20456957 | 117/E | |
| Oritz, Oscar A. | Cpl | | 105 Med | |
| Oritz, Rudy | Pfc | | 117 | |
| Orkins, Curtis E. | Pfc | | 117/A | N,NF |
| Orlando, Frank D. | Pfc | | 119/Unk Co | |
| Orlaska, Norman S. | T/4 | | 743 Tank/B | |
| Orlow, Harry | SSgt | 36405613 | 119/Unk Co | |
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