Companies catalogue
- O'Brien Group Australia, North Melbourne
- O'Briens Valuers PTY LTD, Kew
- O'Connor and Houle Architecture and Landscapes, Albert Park
- OCEANIA ART CENTER, Campbellfield
- OK Gift Shop, Cairns City
- OKAMI Japanese Restaurant - Greensborough, Greensborough
- OSHClub, Toorak
- OSHClub, Rosanna
- OSK Architects, Brunswick
- OTree Restaurant & Receptions, Lilydale
- Oaklea Hall, Hughesdale
- Oakleigh Indoor Sports & Inflatable World, Oakleigh
- Oakleigh Library, Oakleigh
- Oceanfront Realty Palm Cove, Palm Cove
- Oceania Arts Academy, Craigieburn
- Oceanic Art, Collingwood
- Oceanic On Thompson Apartments, Cowes
- Oceanic Property Valuations, Melbourne
- Odd Spot Cafe, Newport
- Odyssey House Victoria, Lower Plenty
- Officer Kebab, Officer
- Officer Medical Centre, Officer
- Officeworks Support Office, Bentleigh East
- Oh Yeah Wow, Brunswick
- Ohana Pizza, Werribee South
- Okami Japanese Restaurant, Frankston
- Okami Japanese Restaurant - Camberwell, Camberwell
- Okey Dokey Childhood Psychology, Bayswater
- Okra Restaurant, Hawthorn East
- Old Scotch Football Club, Camberwell
- Olinda Apartments, Essendon
- Olinda Cafe, Olinda
- Olinda Tea House, Olinda
- Olive Apartments, South Yarra
- Oliver Hume Apartments, Southbank
- Olivet Aged Persons Home, Ringwood
- Olivette Restaurant, Frankston
- Olivia Newton-John Cancer Wellness & Research Centre, Heidelberg
- Olly's Friendly Grocer, Brinsmead
- Olympic Aluminium Die Casting, Airport West
- Olympic Ice Skating Centre, Oakleigh South
- Olympic Park Sports Medicine Centre - Dr. Andrew Jowett, Melbourne
- Omagic Frogs & Insects, Dandenong
- Omega Cricket Club, Moorabbin
- On It Burgers, Ferntree Gully
- On Tap Plumbing & Gasfitting, Earlville
- On-Im-Aloy( Order Online), Carrum Downs
- Ondru, Melbourne
- One Design Office (ODO) Pty Ltd, Richmond
- One Pear Tree, Frankston
- One Plus Piece Café, Balwyn
- One Stage Performing Arts, Whittlesea
- One Stop Property - Real Estate Agent Service, Cairns City
- One Two, Richmond
- Onecare Family Day Care, Campbellfield
- Online Data Storage, Cairns
- Onset Arts Workshop, Brunswick
- Onsite Medical Services, Ringwood
- Ooshcare Epping Vacation Care Program, Epping
- Opal Gracedale, Ringwood North
- Opal Salford Park, Wantirna
- Open Studio, Dandenong North
- Opray Art, Healesville
- Opteon, Westcourt
- Ora-thai South East Asian Cuisine Port Melbourne, Port Melbourne
- Orano, Heidelberg
- Orb Studio, Smithfield
- Orbit Architecture|Wayfinding|Visualization, South Melbourne
- Orient East, Melbourne
- Oriental Aroma & Spa, Saint Kilda
- Oriental Cuisine and Noodles, Rye
- Oriental Flavour Asian Cuisine, Moonee Ponds
- Oriental Massage, Melbourne
- Oriental Thai Relaxation, Melbourne
- Origami Sushi & Noodles, Mordialloc
- Original Oz Art Gallery at the Boathouse, Frankston
- Ormsby Realty, Manunda
- Osha Thai Kitchen, Hawthorn
- Otomys, Richmond
- Our Special Place Cafe, Wheelers Hill
- Our Vet Cranbourne, Cranbourne
- Our Vet Mornington, Mornington
- Our Vet Northland, Preston
- Our Vet South Morang, South Morang
- Outback Solar & Wind, Mareeba
- Outer East Primary Care Partnership, Ringwood
- Outer Eastern Martial Arts - Goju Karate, Bayswater
- Outer Encounters, Mount Evelyn
- Outlines - Street Art & Stencil Workshop, Melbourne
- Outlook Gardens Aged Care, Dandenong North
- Outlook Property Group, Brunswick
- Ovation Valet, Melbourne
- Overlander Touring Solutions, Caravonica
- Overseas Restaurant ( Order Online), Forest Hill
- Oye Bombay, Altona
- Oz Euro Design | Drafting | Derrimut | Melbourne, Derrimut
- Oz Life Apartment, Melbourne
- Oz Shooting - Shooting Days, Team Building Activities & Corporate Events, Carrum Downs
- onQ Performing Arts Academy, Williamstown
- one hundredth gallery, Southbank