Companies catalogue
- O Organic Produce, Surry Hills
- O'Donnell Griffin - Data, Morningside
- OLD Oak Patisserie, Sydney
- OLOL Catholic Church Seven Hills, Seven Hills
- OM Vegan Kitchen, Surry Hills
- ONE 32nd WORLD SLOTCAR RACING CENTRE, Seven Hills
- ONE BUSINESS REALTY, Lidcombe
- ONE:32ndWORLD Slot car racing centre, Pendle Hill
- OPPO Service Centre Macquarie Park, Macquarie Park
- OPSM, Macquarie Park
- ORGANIC INDIA, Banyo
- OSAN Institute of Business and Technology, Parramatta
- OSS Digital, Leichhardt
- OZ Design Furniture - Support Office, Rouse Hill
- OZ SMART EXPRESS Pty Ltd, Monterey
- Oasis Café, Chatswood
- Oatley Castle, Oatley
- Oatley Village Pie Shop, Oatley
- Ocean Beach Surf Life Saving Club, Umina Beach
- Ocean View Mini Buses & Coaches, Collaroy
- Oceania Capital Partners, Sydney
- Oceania Capital Partners Limited, Belrose
- Oceanlink Transport, Cabramatta
- Odd Mug Cafe, Cromer
- OfficeHQ, Sydney
- Oh!Matcha by Chanoma cafe, Sydney
- Oi Cafe, Matraville
- Old Town Hong Kong Cuisine, Sydney
- Old Town Hong Kong On Barangaroo, Barangaroo
- Olive And Bean Cafe, Zetland
- Oliver Brown, Parramatta
- Oliver Brown, Liverpool
- Oliver Brown, Hurstville
- Oliver Brown, Strathfield
- Oliver Brown, Auburn
- Oliver Brown, Parramatta
- Oliver Brown, Haymarket
- Oliver Brown, Bankstown
- Oliver Brown, Zetland
- Oliver Brown, The Ponds
- Oliver Brown, Ryde
- Oliver Brown, Lane Cove
- Oliver Brown Canley Heights, Canley Heights
- Oliver Brown Terrace, Ryde
- Oliver Brown, Mascot, Mascot
- Olympic Continental Delicatessen & Butchery, Bankstown
- Olympus Steel & Shopfitting, Punchbowl
- Omar, Eastlakes
- Omnilink PTY Ltd., Eastwood
- On Shore Cafe Brasserie, Dee Why
- Oncology Massage Therapies, Sydney NSW
- One Stop Cafe, Lidcombe
- OneContact, Surry Hills
- OneSource, Sydney
- Online Career Course, Parramatta
- Online Wealth Solutions, Belmore
- Online Wealth Solutions, Elderslie
- Opal Building Services, Minto
- Open Minds, Wetherill Park
- Optimum Building, Newport
- Optimum Fighting Concepts, Newtown
- Optix 2000, Saint Clair
- Optus Business Centre Homebush, Homebush
- Oran Park Smart Work Hub, Oran Park
- Oran Park Town, Oran Park
- Orange Business Systems, Macquarie Park
- Orange Tree Café, Mount Druitt
- Oreo Cafe, Alexandria
- Ori Cafe, Springwood
- Orient Capital Pty Ltd, Sydney
- Oriental House Restaurant, Leichhardt
- Original Tuckpointing, Denistone East
- Orion Business Park, Sydney
- Orora, Matraville
- Oroton, Waterloo
- Orthodox Funeral Services Sydney, Smithfield
- Otford Farm, Otford
- Our Lady Queen of Peace Parish, Greystanes
- Our Lady Star of the Sea Catholic Church, Miranda
- Our Lady of Czestochowa Queen of Poland Catholic Church, MARAYONG, Marayong
- Our Lady of Fatima Parish Caringbah, Caringbah
- Our Lady of Lebanon Co-Cathedral, Harris Park
- Our Lady of Lourdes Catholic Church, Baulkham Hills
- Our Lady of Mount Carmel Catholic Church, Wentworthville
- Our Lady of Mount Carmel Catholic Church, Varroville
- Our Lady of Mt. Carmel, Bonnyrigg
- Our Lady of The Assumption Catholic Church Homebush, Homebush
- Our Lady of Victories Horsley Park, Horsley Park
- Our Lady of the Rosary Catholic Cathedral, Waitara
- Outbaxcamping, Wetherill Park
- Overman Garage Doors Brisbane, New Farm
- Oxford Chatswood Chase, Chatswood
- Oz Backpacker Tours Australia, Rockdale
- Oz Experience, Sydney, Sydney
- Oz Tiles Market, Kingsgrove
- Oz-mate, Smithfield
- Ozaquatec Service Centre, Hemmant
- Ozia Tours (Snow Tours & Packages fr. Sydney & Newcastle), Ultimo
- Ozpaddle Sydney, Sydney
- Oztent Australia Pty Ltd, Wetherill Park