| O'Brien, Megan Patricia | Baldivis Primary School | Mistress (Teacher) | 1979 |
| O'Brien, Megan Patricia | Richmond Primary School | Mistress (Teacher) | 1980 |
| O'Brien, Mollie | Jingalup VII | Head Teacher on Probation | 1923 |
| O'Brien, Mollie | Jingalup VII | Head Teacher | 1924 |
| O'Brien, Molly | Bicton V | Monitor | 1920 |
| O'Brien, Olive | Laverton VII | Sewing Mistress | 1947 |
| O'Brien, Olive | Group 39 VII | Sewing Mistress | 1948 |
| O'Brien, Olive | Burekup High School | Sewing Mistress | 1950 |
| O'Brien, Olive | Shannon Primary School V | Assistant Teacher on Supply | 1953 |
| O'Brien, Oliver | Burekup High School | Sewing Mistress | 1951 |
| O'Brien, Patricia Mary | North Lake Senior High School | Mistress (Teacher) | 1980 |
| O'Brien, Patrick Thomas | South Merredin Primary School | Master (Teacher) | 1979 |
| O'Brien, Peter | Mirrabooka Senior High School | Temporary Master (Teacher) | 1969 |
| O'Brien, Peter | Eastern Goldfields Senior High School | MA./T. Man. ART. | 1970 |
| O'Brien, Phillipa | Perth Technical College - Department of Art | Lecturer /T. | 1970 |
| O'Brien, Phillippa Ethel | Perth Technical College Art | A Lecturer C T | 1971 |
| O'Brien, Phyllis | Mt. Magnet VI | Monitor | 1920 |
| O'Brien, Phyllis | Lennonville VII | Head Teacher on Probation | 1923 |
| O'Brien, Phyllis | Boddington VI | Head Teacher | 1924 |
| O'Brien, Richard | Eden Hill High School III | Temporary Monitor on Probation | 1951 |
| O'Brien, Sara | Bayswater II | Assistant Teacher | 1924 |
| O'Brien, Sara | Bayswater II. | Assistant Teacher | 1929 |
| O'Brien, Sara | Bayswater II. | Assistant Teacher | 1930 |
| O'Brien, Sarah | Perth East II | Assistant Teacher | 1903 |
| O'Brien, Sarah | Perth East II | Assistant Teacher | 1904 |
| O'Brien, Sarah | Perth East II | Temporary Assistant Teacher | 1905 |
| O'Brien, Sarah | Midland Junction II | Assistant Teacher | 1906 |
| O'Brien, Sarah | Midland Junction II | Assistant Teacher | 1907 |
| O'Brien, Sarah | Fremantle North III | Assistant Teacher | 1910 |
| O'Brien, Sarah | Cannington IV | Assistant Teacher | 1911 |
| O'Brien, Sarah | Cannington IV | Assistant Teacher | 1912 |
| O'Brien, Sarah | Cannington V | Assistant Teacher | 1920 |
| O'Brien, Sarah | Victoria Park I | Assistant Teacher | 1923 |
| O'Brien, Sheila | Grass Valley VI | Probationer | 1923 |
| O'Brien, Sheila | Latham VII | H.T.on S | 1924 |
| O'Brien, Susan | Perth North Infants Primary School | Mistress (Teacher) on Probation | 1965 |
| O'Brien, Therese | Cunderdin Agricultural Junior High School I | Mistress (Teacher) on Probation | 1966 |
| O'Brien, W. R. | Katanning VI | Head Teacher | 1900 |
| O'Brien, W.R | Grass Valley VII | Head Teacher | 1915 |
| O'Brien, William R. | Leederville III | Assistant Teacher | 1902 |
| O'Brien, William R. | Mount Magnet VI | Head Teacher | 1903 |
| O'Brien, William R. | Mount Magnet VI | Head Teacher | 1905 |
| O'Brien, William R. | Mount Magnet | Head Teacher | 1906 |
| O'Brien, William R. | Dongara | Head Teacher | 1907 |
| O'Brien, William R. | Capel VI | Head Teacher | 1909 |
| O'Brien, William R. | Caversham VI | Head Teacher | 1911 |
| O'Brien, William R. | Mundaring Townsite V1 | Head Teacher | 1912 |
| O'Brien, Wm. R. | Leederville III | Assistant Teacher | 1901 |
| O'Brien, Wm. R. | Mt. Magnet VI | Head Teacher | 1904 |
| O'Brien, Wm. R. | Dongara | Head Teacher | 1908 |
