Browse Occupations - O
- Obstetrician
- De Garis, Mary Clementina, Campaigner, Child welfare advocate, Feminist, Medical practitioner and Obstetrician
- Olympian
- de la Hunty, Shirley Barbara, Athletics coach, Commonwealth Games Gold Medalist, Lecturer, Olympian, Teacher and Track and field athlete
- Fraser, Dawn, Commonwealth Games Gold Medalist, Olympian, Parliamentarian, Swimmer and Swimming coach
- Freeman, Catherine (Cathy) Astrid Salome, Commonwealth Games Gold Medalist, Olympian and Track and field athlete
- Jackson-Nelson, Marjorie, Commonwealth Games Gold Medalist, Governor, Olympian and Track and field athlete
- Peris, Nova, Aboriginal activist, Commonwealth Games Gold Medalist, Hockey player, Olympian, Politician and Track and field athlete
- Opera diva
- Melba, Nellie, Opera Diva
- Ophthalmologist
- Mann, Ida Caroline (1893 - 1983), Ophthalmologist
- Oral historian
- Lowenstein, Wendy Katherin, Author and Oral historian