Key: S=as a Spouse, C=as a Child, P=as a Parent
| Names | Born | Died | 
| OAKLEY | ||
| Brooke NicoleC | born 1978 | |
| Monique ReneeC | born 1977 | |
| Phillip JohnS | born 1956 | died 1983 | 
| O'BRIEN | ||
| AlliraS | ||
| OGDEN | ||
| Andrew DavidC | born 1964 | |
| DavidC | ||
| Geoffrey RaymondC | born 1962 | |
| Janine AnnC | born 1956 | |
| JasminC | ||
| Jennifer SuzanneC | born 1961 | |
| LaurenC | ||
| Leanne MareeC | born 1957 | |
| MathewC | ||
| Raylene JoyC | born 1959 | |
| Raymond KeithS | born 1932 | |
| O'GRADY | ||
| Beatrice Stella KateS | born 1878 | |
| JohnP | ||
| OKINES | ||
| Ernest JohnS | born 26 Dec 1877 | |
| OLDHAM | ||
| Edna LillianS | born 20 Feb 1933 | |
| OLDROYD | ||
| Jane ElizabethP | born 5 Apr 1828 | died 10 Jul 1902 | 
| O'LEARY | ||
| Bernard KevinS | born 28 Mar 1949 | |
| Julianne GailC | born 1 Jul 1983 | |
| Natalie KristenC | born 10 Dec 1975 | |
| Peter BernardC | born 1 May 1978 | |
| O'SULLIVAN | ||
| Margaret FitzgeraldS | born 13 Nov 1915 | died 3 Jun 1989 | 
| OTTE | ||
| Joseph AdrianS | born 29 Jul 1997 | |
| OUTEN | ||
| Amy ElizabethS | born Abt 1897 | died Abt 1922 | 
| OVENS | ||
| Lorraine AliceS | born 9 Nov 1938 | |
| OVERLAND | ||
| Phillip AnthonyS | born 7 Apr 1967 | |
| Thomas Anthony JamesC | born 7 Nov 2013 |