| NAME | Nickname | Rank/Rate | Enlisted | Flt Res | Full Ret | Separated | Remarks | |
| O | Top | |||||||
| O'Bannon, Don | O'B | CTM1 | Jun 1955 | Sep 1975 | - | - | - | |
| O'Borne, Jaimie | OB | CTA2 | Aug 1998 | - | - | Jun 2004 | - | |
| O'Brien, Dan | Dano | CTR2 | Mar 1991 | - | - | Mar 1995 | - | |
| O'Brien, Edward | OB, ED | CTO2 | Oct 1961 | - | - | Oct 1967 | - | |
| O'Brien, Patrick J. | - | CTRCS | Feb 1971 | Oct 1996 | Jun 2000 | - | - | |
| O'Brien, William R. | O'B | CPL(USMC) | Dec 1963 | - | - | Dec 1967 | - | |
| O'Carroll, Joseph Bernard | - | DPCS | Dec 1952 | - | May 1983 | - | former CT "S-brancher" 53-56 | |
| O'Connor, Bartholomew T. | BT | CT3 | Aug 1963 | - | - | Aug 1967 | - | |
| O'Connor, Beth | - | CTA3 | 1983 | - | - | 1989 | - | |
| O'Connor, Karen H. | - | FORCM(SW/AW) | Apr 1979 | 2006 | - | - | former CTRCM | |
| O'Day, Ronald Frederick | Chic | CTRCM(SS) | Nov 1957 | Oct 1977 | - | - | - | |
| O'Dea, Padraic | Paddy | CTT1(AW/SW/NAC) | Oct 1989 | - | - | - | Still on Active Duty | |
| O'Dell, Patrick | - | CWO2 | Feb 1980 | Jan 2001 | - | - | former CTRCS(SW) | |
| O'Donnell, Francis | - | CT2 | Mar 1962 | - | - | Jul 1965 | - | |
| O'Donnell, Gene | ET | CTI2 | Dec 1966 | - | - | Sep 1970 | - | |
| O'Donnell, Helen | - | RM3 | Oct 1943 | - | - | Dec 1945 | Son's email address | |
| O'Hagan, Michael Denis | - | CTO2 | May 1981 | - | - | May 1985 | Michael Hagan | |
| O'Halloran, Francis | Hacker | CT3 | Oct 1952 | - | - | Jan 1955 | - | |
| O'Hare Brian | - | CTR2 | Sep 1988 | - | - | Jul 1992 | - | |
| O'Heron, Lawrence | - | CTICS | Apr 1977 | Sep 1994 | Jul 2002 | - | - | |
| O'Kane, Joe | - | LT | Feb 1966 | Apr 1986 | - | - | - | |
| O'Leary, Michael P. | Mike | CTT1 | Jul 1971 | - | - | May 1979 | - | |
| O'Loughlin, Dennis | - | CTR2 | Oct 1958 | - | - | Jul 1962 | - | |
| O'Neal, Patricia V. | Pat | CTACS | Jan 1985 | - | - | - | USN 85-90/USNR 90 - now | |
| O'Neil, Mike | - | CTR1 | May 1991 | - | - | - | Still on Active Duty | |
| O'Neil, Richard E. | Rich | CTOC(SW) | Jun 1974 | Oct 1996 | Jun 2004 | - | - | |
| O'Rourke, Owen J. | - | CTR2 | 1959 | - | - | 1963 | - | |
| O'Shaughnessy, Michael E. | Mike | CTR2 | Jun 1961 | - | - | Jun 1965 | - | |
| Oakes, John Thomas | Red | CTM3 | Mar 1959 | - | - | Nov 1961 | - | |
| Oakes, Robert P. | Bob | LT | Jun 1960 | Aug 1983 | - | - | LT (LDO) | |
| Oakes, Thomas Gerard | - | MS (CF) | Mar 1969 | - | - | Apr 1994 | Master Seaman (MS) with the Comm Rsch 291 Canadian Forces (Navy) |
|
| Oakley, Jerald | - | BU2 | 1960 | - | - | 1970 | former CT2 | |
| Oakley, Michael | - | CTA3 | Sep 1969 | - | - | Jun 1973 | - | |
| Oates, Colin A. | - | CTA2(SW) | Jan 1993 | - | - | - | Still on Active Duty | |
| Oblinski, Donald | Ski | CTR3 | Sep 1968 | - | - | Mar 1972 | - | |
| OBriant II, Robert W. | Bob | CTT1 | Jul 1979 | - | - | Mar 1990 | - | |
| Oelze Jr., Richard E. | Dick | CTT3 | Jun 1963 | - | - | Jan 1969 | - | |
| Oestringer, Russell E. | - | CTMC | Feb 1956 | Sep 1978 | Feb 1986 | - | - | |
| Oetken, Kristianne | Kristi | CTI3 | May 1990 | - | - | Dec 1994 | - | |
| Offdenkamp, Richard L. | Big Bird | CTTC | Dec 1964 | Feb 1985 | Dec 1994 | - | R.I.P. | - |
| Officer Jr, Charles D | Chuck | LCDR | 1974 | 1993 | - | - | former SGT(USMC) | |
| Oftedal, Bob | - | CT3 | Apr 1963 | - | - | Mar 1967 | - | |
| Ogaard, Louis Adolph | McQueen | CTR2 | Oct 1968 | - | - | Apr 1972 | - | |
| Ogden, Andrew | Drew | CTRC(SG) | Dec 1980 | Jan 2001 | - | - | - | |
| Ogden Jr., Louis Charles | - | CTI3 | Jun 1966 | - | - | Mar 1970 | - | |
| Oge, Steven | - | CTR3 | Feb 1969 | - | - | Dec 1972 | - | |
| Ogren, John P. | Pat | CAPT | Nov 1957 | - | Aug 1987 | - | - | |
| Okel, Jerry M. | Mogul | CPL(USMC) | Apr 1957 | - | - | 1960 | - | |
| Oldham, Brian R. | - | CTT2 | Mar 1968 | - | - | Mar 1972 | - | |
| Oliver, Manley A. | Ollie | CTRCS | Aug 1954 | Mar 1979 | Aug 1984 | - | - | |
| Oliver, Marion B. | Ollie | CTR3 | Jun 1966 | - | - | Jun 1970 | - | |
| Oliverio, Robert L. | Ollie | CTR2 | 1962 | - | - | 1968 | Retired US Army 11B50 First Sergeant E8 |
|
| Olivero, Nicholas F. | Nick | CTT2 | Dec 1961 | - | - | Apr 1966 | - | |
| Olmo, Juan Enrique | - | CTR2 | Oct 1985 | - | - | Feb 1993 | - | |
| Olmstead, Kevin | Obiwan | CTIC(AW/NAC) | Aug 1989 | - | - | - | Still on Active Duty | |
| Olmstead, Samuel R. | Sammy Da Bull | CTTCS | Jul 1990 | - | - | - | Still on Active Duty | |
| Olsen, Christopher O. | Chris | CTI2 | Mar 1965 | - | - | Mar 1969 | - | |
| Olsen, James E. | Jim | LT | Jul 1945 | Apr 1968 | - | - | LT (LDO) | |
| Olson, Edward G. | - | CWO4 | Jul 1966 | - | - | Aug 2001 | former CTI | |
| Olson, Ronald | - | CTT2 | Feb 1959 | - | - | Feb 1963 | - | |
| Olson, Russell E. | Homerow | CWO2 | Jan 1962 | Apr 1983 | - | - | former CTRC(SS) | |
| Omohundro, David | - | CT3 | 1956 | - | - | 1959 | - | |
| Omohundro, Ken | - | CTM2 | Jun 1960 | - | - | Jun 1963 | - | |
| Oneal, Thomas | - | CTTC | Jun 1961 | Jun 1981 | - | - | - | |
| Oneill, Hugh | - | CTT2 | Aug 1979 | - | - | 1984 | - | |
| Orchard, Gould O. | Orch | CTCS | Oct 1947 | Sep 1970 | Oct 1977 | - | - | |
| Orem, Veronica Eva | Vicki | CDR | Apr 1973 | Aug 1996 | - | - | former CTI-brancher Veronica Eva Budacki Orem |
|
| Orndorff, Dennis Lee | - | CTT1 | Jul 1975 | Jul 1995 | - | - | - | |
| Orres III, John J. | JJ | CTR2 | Aug 1974 | - | - | Jun 1978 | - | |
| Orsak, Francis Charles | - | CTA3 | Aug 1970 | - | - | Aug 1974 | - | |
| Ortiz, Edward Henry | OB | CTR2 | Jul 1983 | - | - | May 1988 | - | |
| Ortutay, Roy | - | CTR1 | Apr 1991 | - | - | Jul 2002 | - | |
| Osband, David W. | OZ | CTT1 | Oct 1972 | Nov 1992 | Nov 2002 | - | - | |
| Osborn, Allen O. | Oz, Ozzie | CTRCM | Jan 1947 | Jan 1967 | Jul 1976 | - | - | |
| Osborn, George | Ozzie | CTI2 | Oct 1968 | - | - | Mar 1972 | - | |
| Osborne, Marlon | Ozzy | CTM1 | Sep 1978 | Aug 1998 | Sep 2008 | - | - | |
| Osborne-Lomax, Sean R. | Oz | CTT2 | Feb 1978 | - | - | Apr 1984 | - | |
| Oster, David | - | CTA1 | Nov 1971 | - | - | Feb 1984 | - | |
| Osterberg, Gerry M. | - | SSGT(USMC) | Apr 1959 | - | - | Mar 1968 | - | |
| Ostling, Daniel James | Dano | CTA2 | Dec 1965 | - | - | Dec 1969 | aka: Ozzie | |
| Ostynski, Scott Joseph | - | CTOCM | Dec 1975 | Jan 2003 | - | - | - | |
| Ott, Franz | - | CWO4 | Aug 1977 | - | - | - | Still on Active Duty former CTACS |
|
| Ott, Leonard | Lenny | CT3 | 1952 | - | - | 1960 | - | |
| Ott, Tanya Michelle | Toni | CTT1 | Dec 1990 | - | - | Oct 1995 | USNR 19 Mar 1999 to present | |
| Ott, William | - | CTI2 | Nov 1976 | - | - | Jun 1980 | - | |
| Otten, W. J. | Jake | CTRC | Feb 1956 | Jul 1976 | Mar 1986 | - | - | |
| Ottinger, Joseph C. | - | CTR3 | Nov 1968 | - | - | Jun 1972 | - | |
| Otto Jr, Albert C. | - | LT | May 1947 | Jun 1970 | - | - | - | |
| Otts, John R. | Rick | CTA3 | Nov 1969 | - | - | Dec 1973 | - | |
| Ouellette, Robert L. | Bob | CTRCM(SW) | Aug 1977 | - | - | - | Still on Active Duty | |
| Ousey, Jay B. | - | CTTC | Feb 1957 | Aug 1979 | - | - | - | |
| Outman, Fred | - | CTR2 | Jun 1968 | - | - | Apr 1972 | - | |
| Outhouse, Henry James | - | CTM2 | Jul 1978 | - | - | Jul 1985 | - | |
| Ouzts, David | - | CTR2 | 1983 | - | - | 1993 | - | |
| Over, James H. | - | CTR2 | Jul 1961 | - | - | Oct 1967 | No-Email | - |
| Overland Jr., Walter | Big O/ O | CTRC | Mar 1959 | Jun 1980 | Jun 1990 | - | - | |
| Overly, Chad L. | - | ITC | Aug 1992 | - | - | - | former CTO1(SW/NAC) Still on Active Duty |
|
| Overman II, Dewey B. | Dewey | CTT3 | Aug 1960 | - | - | Aug 1963 | - | |
| Overman, Julie | - | CTM2 | May 1988 | - | - | Feb 1996 | - | |
| Owen, Joseph | - | CTR1 | Jun 1983 | - | - | Jul 1998 | - | |
| Owen, Linda | - | CTRC | Jul 1975 | - | Aug 2005 | - | No-Email | Linda (Wood) Owen |
| Owens, Albert E. | Al | CTR2 | Oct 1966 | - | - | Feb 1970 | - | |
| Owens, Donald G. | Don | YN1 | Oct 1959 | Jul 1991 | - | - | former CTM2 60-68 | |
| Owens, Joseph | Joe | CTT3 | 1986 | - | - | Jul 1993 | USN 86-89/USNR 89-93 | |
| Owens, Kimberly | - | CTR2 | Apr 2001 | - | - | Apr 2005 | - | |
| Owens, Michael E. | - | CTT2 | Mar 1986 | - | - | Feb 1991 | - | |
| Owens, Ray P. | - | LCDR | Mar 1958 | - | May 1988 | - | R.I.P. | 07 Mar 2005 |
| Owens, Steve L. | - | CTO2 | Jul 1964 | - | - | Aug 1968 | - | |
| Oylear, Michael | Mike | CTO3 | Aug 2003 | - | - | - | Still on Active Duty | |
| Ozehoski, Edward Mark | - | LCDR | Jul 1958 | Aug 1982 | - | - | R.I.P. | former CTT |