| Oakes | Malcolm | Bruce | 02/09/1997 | QC |
| Oates | Antony | Gordon | 24/12/1965 | |
| O'Brien | Benjamin | James | 03/02/2009 | |
| O'Brien | Bernard | Michael | 02/05/2002 | |
| O'Brien | Catherine | Joan | 10/11/1977 | |
| O'Brien | Clare | Anne | 03/02/1993 | |
| O'Brien | Conor | Edward John | 02/04/2008 | |
| O'Brien | Francis | Carew | 05/10/1982 | |
| O'Brien | Gerard | Paul | 16/03/1976 | |
| O'Brien | Jacqueline | Ruth | 21/12/2001 | |
| O'Brien | Joseph | Roderick | 21/03/1972 | |
| O'Brien | Marcus | John | 02/05/2002 | |
| O'Brien | Maria | Francine Coffill | 06/04/1999 | |
| O'Brien | Mark | Geoffrey | 03/05/1994 | |
| O'Brien | Michael | John | 15/07/1975 | |
| O'Brien | Monica | Cecilia | 04/02/1991 | |
| O'Brien | Rebecca | Anne | 02/02/1999 | |
| O'Brien | Richard | Leighton | 05/03/2002 | |
| O'Brien | Thomas | Denis Predergast | 02/05/2006 | |
| O'Bryan | Katharine | Mary | 02/05/2000 | |
| O'Bryan | Stephen | Guy | 12/07/2000 | |
| O'Callaghan | Barry | David | 23/06/1989 | |
| O'Callaghan | Brian | Gerard | 03/04/2002 | |
| O'Callaghan | Patrick | Kevin | 20/12/2006 | |
| O'Callaghan | Peter | John | 23/12/1988 | QC |
| Ochwada | Leslie | Beneah Mugubi | 03/03/2004 | |
| Ockenden | Robert | Horace Vincent | 17/05/1966 | |
| O'Connor | Amy | Louise | 02/04/2008 | |
| O'Connor | Anthony | John Noel | 21/12/1990 | |
| O'connor | Colin | Emmett | 03/08/1999 | |
| O'connor | Michael | Charles | 02/10/1996 | |
| O'connor | Peter | Joseph Anthony | 15/07/1930 | |
| O'Connor | Terence | Edward | 22/12/1961 | QC |
| O'connor | Victor | James Alexander | 20/07/1954 | |
| Odbert | John | Dennis | 03/05/1988 | |
| Oddie | Carolyn | Margaret | 03/04/2002 | |
| O'Dea | Daniel | John | 21/12/1990 | |
| O'dea | Daniel | John | 23/12/1952 | |
| O'dea | John | Vernon | 04/02/1991 | |
| O'Dell | Graham | | 03/08/2010 | |
| Odes | Michael | Walter | 08/07/1987 | QC |
| Odlum | Reginald | Lance | 21/07/1964 | |
| O'doherty | David | James | 02/02/2000 | |
| O'donahoo | Ian | Peter Scott | 02/03/1994 | |
| O'donnell | Michael | Patrick | 02/11/1990 | |
| O'donnell | Paul | Thomas | 04/09/2001 | |
| O'donohue | Peter | Thomas | 20/07/1965 | |
| O'Donovan | Elizabeth | Deborah | 05/03/2003 | |
| O'donovan | Mary | Teresa | 23/12/1992 | |
| Oeij | Oliver | Charles | 03/08/2010 | |
| O'farrell | Justin | James | 12/07/2000 | |
| Offer | Catherine | Mary | 15/07/1992 | |
| Officer | David | Peter Forbes | 04/09/2000 | |
| Ogawa | Natsuko | | 02/04/1997 | |
| Ogilvie | Charles | William | 18/03/1970 | |
| O'gorman | Terence | Patrick | 02/05/1986 | |
| O'grady | Patrick | Francis | 02/06/2004 | |
| O'grady | Rosemary | Anne | 04/08/1987 | |
| O'haire | Brian | Vance | 02/02/1988 | |
| O'haire | Denis | Patrick | 02/02/1988 | |
| O'halloran | Edmund | Alfred | 05/06/1979 | |
| O'halloran | John | Vincent | 13/07/1988 | |
| O'halloran | John | Harold | 17/07/1934 | |
| O'halloran | Margaret | Cecilia | 02/09/1992 | |
| O'hanlon Creed | Mary | Jane | 05/10/2004 | |
| O'Hara | Bernard | Michael | 23/12/1993 | |
| O'hara | Christine | | 03/08/1999 | |
| O'hara | Gerard | James | 23/12/1980 | |
| O'Hara | John | Philip | 02/02/2006 | |
| O'hara | Louise | Elizabeth | 21/12/1984 | |
| O'hare | Colin | William | 02/04/1987 | |
| Ohe | Kikuji | | 03/04/2001 | |
| O'hehir | Christopher | Michael | 03/09/1991 | |
| Oi | Ian | Hong-li | 04/03/1992 | |
| Oi | Jean | Yuen-li | 03/02/1993 | |
| O'Keefe | Barry | Stanley John | 04/09/1990 | QC |
| Okno | Jacob | Franklin | 02/04/1997 | |
| Oldfield | Christopher | Bernard | 06/04/1999 | |
| Oldis | Kenneth | John | 02/10/1996 | |
| O'leary | Thomas | Joseph Patrick | 23/12/1988 | |
| Olgers | Katrina | Lee | 21/12/2001 | |
| Oliquist | John | Edward Bryan | 22/12/1950 | |
| Olive | Noel | James | 02/03/1989 | |
| Olney | Howard | William | 17/09/1957 | |
| O'loghlen | Michael | | 02/03/1988 | |
| O'loughlin | Benjamin | | 03/09/1996 | |
| O'Loughlin | Kate | Louise | 21/12/2001 | |
| O'loughlin | Peter | Paul | 03/02/1993 | |
| Olsson | Stephen | Richard Graham | 14/07/1993 | |
| Olszewska | Jolanta | | 02/03/1995 | |
| O'Mahony | Agrita | Chantel | 17/03/2008 | |
| O'Mahony | Emily | Jane | 02/04/2008 | |
| O'Mahony | James | | 03/02/2005 | |
| O'mullane | Kelly | Anne | 03/07/2007 | |
| O'Neal | Patrick | Brian | 23/12/1992 | |
| O'neill | Daniel | Jonathan | 03/03/1999 | |
| Ong | Audrey | Suan See | 04/02/2002 | |
| Ong | Hean | Cheng Jack | 02/04/1981 | |
| Ong | Melody | | 05/03/1996 | |
| Ong | Teck | Huang | 18/11/2009 | |
| Opie | Alfred | Charles | 02/06/2000 | |
| Opperman | David | Alexander | 12/07/2000 | |
| O'reilly | Stephen | Gerard | 02/02/2000 | |
| Orifici | Giuseppe | | 23/12/1977 | |
| Orlando | Matthew | Con | 02/02/2001 | |
| Orlov | Michael | | 02/06/1999 | |
| Ormiston | William | Frederick | 14/02/1978 | |
| O'rourke | Kelly | Marie | 22/12/2005 | |
| O'rourke | Susan | Mary | 05/06/1991 | |
| O'rourke | Warwick | Philip | 03/04/2001 | |
| Osborn | Robert | Stanley | 02/06/1988 | |
| Osborne | Martin | Francis | 02/05/2003 | |
| O'Shannessy | Adrian | Gerard | 12/07/2000 | |
| O'Shannessy | Patrick | Mark | 02/05/1997 | |
| O'shea | Bernard | Joseph | 03/04/2001 | |
| Oslington | Bruce | Clifford | 04/11/1991 | QC |
| O'sullivan | Helen | | 23/12/1977 | |
| O'Sullivan | Jacqueline | Louise | 22/12/1998 | |
| O'sullivan | John | Kevin | 12/07/2000 | |
| O'Sullivan | Michael | Denis Finbarr | 22/12/1972 | QC |
| O'sullivan | Michele | Louise | 21/12/1990 | |
| O'sullivan | Peter | Matthew | 02/08/2001 | |
| O'sullivan | Shauna | Patricia | 02/09/1988 | |
| O'sullivan | Simon | Patrick | 02/02/1996 | |
| O'Toole | Dominic | Asher | 04/02/2008 | |
| Ould | Kimberley | Ellen | 23/12/1993 | |
| Overman | Gerard | Marius | 20/05/1970 | |
| Overmeire | Roger | Edward | 23/12/1988 | |
| Ovnerud-potter | Paul | Richard | 02/03/1995 | |
| Owen | Crispin | John Guy | 03/04/1990 | |
| Owen | Gail | Ann | 02/06/1988 | |
| Owen | Michael | John | 23/06/1989 | |
| Owen | Neville | John | 23/12/1970 | |
| Owen | Timothy | Nicholas | 22/12/2004 | |
| Owens | John | Brian | 03/09/1996 | |
| Oxby | William | Thomas | 25/01/2008 | |
| Oxnard | David | Charles Guy | 05/03/1996 | |
| Ozich | Clare | | 21/12/2000 | |
| Ozich | Vladimir | Veselko | 23/12/1970 | |
|