| | Name | Rank | ASN | Unit | Campaign | | Okolo, Joseph J. | Pfc | 20108694 | 120/L | |
| Okonoski, Henry J. | Cpl | | 743 Tank/B | |
| Okonowitz, (unknown) | Pvt | 6987668 | 119/E | |
| Okrzesik, Theodore A. | Pfc | | 119/G | |
| Oksys, Alex C. | Sgt | 31142620 | 120/B | |
| Oland, Edwin H. | TSgt | | 119/Unk Co | |
| Olbruch, Frederick F. | Pfc | 31007895 | 119/A | |
| Olden, (unknown) | Pvt | 36987308 | 119/E | |
| Olden, Fred A., Jr. | SSgt | 31171667 | 117/E | |
| Oldendorf, Edward E. | T/5 | | 120/Unk Co | |
| Oldfield, Leonard G. | Pvt | | 117 | |
| Oldham, Robert | SSgt | | 120/Unk Co | |
| Olea, (unknown) | Pvt | 39578933 | 119/E | |
| Olen, Robert F. | | | 119/Unk Co | |
| Olesh, John A. | Pfc | | 118 FA/A | |
| Oleski, Merritt S. | | | 117/2nd | |
| Oleson, Alvin B. | | | 531 AAA/Btry C | |
| Oliphant, George H. | T/5 | | 743 Tank/D | |
| Olive, William A. | T/4 | 20419636 | 119/M | |
| Olive, Wilson R. | Sgt | | 117/3rd/AT Plt | |
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