- O'Riordan
-
William Joseph (1907 - 1972)
- O'Rourke
-
Terence Percival
(1921 - 1978)
- O'Sullivan
- Oakden
-
Lily Louisa (1884 - 1923)
- Oakley
-
Henry (1879 - )
- Oakshatt
-
Emma Mary Ann (1854 - 1904)
- Obee
-
Reuben Albert (1925 - 1987)
- Odd
-
Mildred Eliza (1873 - 1941)
- Odell
-
Harriet (1879 - )
- Ogden
-
Ann (1902 - )Ernest (1920 - 1988)Esther Annie (1917 - 1989)
- Ogilvie
-
Agnes Amelia (1876 - 1960)Emily Frances (1877 - )Jessie Mary (1873 - 1963)John Alexander (1909 - 1966)Margaret Alexandra (1887 - 1976)Robert John (1845 - 1911)Robert William (1879 - 1922)
- Old
- Oldcorn
-
Kathleen Annie (1901 - 1977)
- Oliver
-
Laura B (1880 - )Mary (1865 - b 1895)Reginald W (1879 - )Thomas (1880 - )William B (1850 - )
- Oller
-
Corinne Elizabeth
(1904 - 1980)
- Oneill
-
Kenneth Henry
(1929 - )
- Ongley
-
Albert (1863 - 1951)Binie Elizabeth
(1889 - 1961)
Henry (1822 - 1923) - Oram
-
Joanna
(1748 - 1826)
Robert(1697 - 1782)
Robert(1736 - )
- Orbell
- Orchard
-
Fanny (1862 - )
- Organ
-
Pamela Joyce (1937 - 1991)
- Ormiston
-
Violet Patricia (1932 - 2012)
- Ormond
-
Elizabeth (1745 - 1829)
- Osborn
-
Dennis Albert (1926 - 2012)
- Osborne
-
George Alfred (1928 - 1976)Jane (1861 - )John W (1888 - 1941)Joseph Charles Cecil (1899 - 1976)Marie Jean (1915 - 1986)