Companies catalogue
- OF Sydney, Fairfield
- OZWAC, Kingswood
- Oakdale Anglican Church, Oakdale
- Oatlands Public School, Oatlands
- Ohel Chapel, Macquarie Park
- One Education, Erskineville
- Online Drafting Services (Queensland) Pty LTD, Springwood
- Open Doors Australia, Castle Hill
- Opportunity International Australia, Sydney
- Opulent Gardens of Sydney, Kareela
- Orient Pacific Drilling Supplies, Haigslea
- Osaka Bar, Potts Point
- Osborne Yuille, Harris Park
- Otford Public School, Otford
- Our Lady Help of Christians Catholic Church Rosemeadow, Rosemeadow
- Our Lady Help of Christians Catholic Parish Church, Epping
- Our Lady Help of Christians Catholic Primary School Epping, Epping
- Our Lady Queen of Peace Catholic Church, Gladesville
- Our Lady Queen of Peace Catholic Primary School, Gladesville
- Our Lady Queen of Peace, Greystanes, Greystanes
- Our Lady Seat of Wisdom Chapel, North Sydney
- Our Lady Star of the Sea Catholic Church, Kirribilli
- Our Lady Star of the Sea Catholic School, Miranda
- Our Lady of Dolours, Chatswood
- Our Lady of Dolours Catholic Primary School, Chatswood
- Our Lady of Fatima Catholic Church Peakhurst, Peakhurst
- Our Lady of Fatima Catholic Primary School, Kingsgrove
- Our Lady of Fatima Catholic Primary School, Caringbah
- Our Lady of Fatima Church, Kingsgrove
- Our Lady of Good Counsel Catholic Church, Forestville
- Our Lady of Good Counsel Catholic Primary School, Forestville
- Our Lady of Lourdes Catholic Church, Seven Hills
- Our Lady of Lourdes Catholic Primary School, Earlwood
- Our Lady of Lourdes Catholic School, Seven Hills
- Our Lady of Lourdes Primary School, Baulkham Hills South
- Our Lady of Mercy, Concord
- Our Lady of Mt Carmel Catholic Primary, Waterloo
- Our Lady of Mt Carmel Catholic Primary School, Bonnyrigg
- Our Lady of Perpetual Succour Catholic Church, West Pymble
- Our Lady of Perpetual Succour School, West Pymble
- Our Lady of The Annunciation Catholic Primary School, Maroubra
- Our Lady of The Rosary Catholic Primary School, Fairfield
- Our Lady of The Rosary Catholic Primary School, Kensington
- Our Lady of The Rosary Parish Kensington, Kensington
- Our Lady of The Sacred Heart Catholic Primary School, Randwick
- Our Lady of The Way Catholic Church, Sylvania
- Our Lady of The Way Primary School, Emu Plains
- Our Lady of the Angels Catholic Church Rouse Hill, Kellyville
- Our Lady of the Angels Primary, Kellyville, Kellyville
- Our Lady of the Annunciation Catholic Church Pagewood, Maroubra
- Our Lady of the Nativity Parish, Lawson
- Our Lady of the Rosary Catholic Church St.Mary's, Saint Marys
- Our Lady of the Rosary Catholic Primary School, Waitara
- Our Lady of the Rosary Parish Kellyville, Kellyville
- Our Lady of the Rosary Primary, Saint Marys
- Our Lady of the Rosary Primary School, Kellyville
- Our Lady of the Sacred Heart, Randwick
- Our Lady of the Way Emu Plains Parish, Emu Plains
- Outdoor Movies Australia, Marrickville
- Oxfam, Bondi Junction
- Oxfam Australia, Surry Hills
- OzHarvest, Alexandria