| O Connor, Robert M - 38 |
| O'Callaghan, Lee M - 20 |
| O'Donnell, Craig - 24 |
| O'Donnell, Gary - 40 |
| O'Quinn, Kenneth C - 25 |
| Oaks, Donald S JR - 20 |
| Obaji, Francis C - 21 |
| Oberleitner, Branden F - 20 |
| Obleas-Prado, Pena J - 36 |
| Obourn, George R JR - 20 |
| Obrien, William D - 19 |
| Obryant, Matthew J - 22 |
Oceguera, Alex - 19Jesus Mosqueda  |
| Ochoa, José Argelio S - 39 |
| Ochsner, James S - 36Robert L. Ochsner |
| Oday, Patrick T - 20 |
| Odell, Robert D - 38 |
| Odonnell, Shane K - 24 |
| Odonohoe, Justin L - 27 |
| Odums, Charles E II - 22Trevor Hassett |
| Ofeciar, Henry S - 37 |
| Ogburn, John B III - 45 |
| Oglesby, Wade J - 27 |
| Ohaire, Walter K - 20 |
| Oh, Oh - 27 |
| Ojeda, Ramon C - 22 |
| Okray, Stephen M - 21 |
| Olaes, Tony B - 30 |
| Oleary, Tanner J - 23 |
| Olguin, Randell - 24 |
| Oliveira, Brian - 22 |
| Olivier, Nicholas J - 26Tracie Hunter |
| Olla, Silvio - 32 |
| Olmsted, Andrew J - 37 |
| Olsen, Daniel R - 20 |
| Olsen, Toby R - 28 |
| Olson, John T - 21 |
| Olson, Nicholas P - 22 |
| Olson, Todd D - 36 |
| Oneill, Evan W - 19 |
| O’Neill, Kris - 27 |
| Oneill, Michael C - 22 |
| Oneto-Sikorski, Robert C - 33 |
| Onwordi, Justin B - 28 |
| Opicka, Dean D - 29 |
| Opskar, Bryan J - 32 |
| Ordonez, Julio C - 54 |
| Oremus, Michael K - 21 |
| Orengo, Richard P - 32 |
| Orlando, Giuseppe - 28 |
| Orlando, Kim S - 43 |
| Orlowski, Eric J - 26 |
| Ornsbyadkins, Jay D - 21Morgan Inczewski |
| Orosco, Adrian N - 26 |
| Orozco, Osbaldo - 26 |
| Orr, Cody J - 21 |
| Ortega, Elijah M - 19 |
| Ortiz, Maria I - 40 |
| Orton, Billy J - 41 |
| Orzechowski, Bartosz - 29 |
| Osbey, Timothy R - 29 |
| Osbourne, Pamela G - 38 |
| Osmolski, John C - 23 |
| Osteen, Mark S - 43 |
| Ostrom, Ryan S - 25 |
| Oswell, Scott A - 33 |
| Otey, Deshon E - 24 |
| Ott, Kevin C - 27 |
| Ottolini, Michael C - 45 |
| Ouellette, Brian J - 37 |
| Ouellet, Jérémie - 22 |
| Overstreet, Tyler R - 22 |
| Owen, Michael G - 31 |
| Owens, Anthony C - 21 |
| Owens, Bartt D - 30 |
| Owens, David E JR - 20Jody Carter |
| Ozolins, Edgars - 23 |