Companies catalogue
- OISEE Coaching Centre, Blackburn
- ORS Group, Camberwell
- ORS Group, Preston
- ORS Group, Sunshine
- OSHClub, Oakleigh
- OTC, Melbourne
- OTS Transport Pty. Ltd., Devon Meadows
- OZ Foreign Currency Exchange in Dandenong Melbourne, Dandenong
- Oak & Vine, Melbourne
- Oak Estate Agents, Kew East
- Oak Park Chiropractic Clinic, Oak Park
- Oak Park Family Chiropractic, Oak Park
- Oak Tree Counselling, Point Cook
- Oakdale Angling Club, Mount Waverley
- Oakgrove Community Centre, Narre Warren South
- Oakleigh Cricket Club, Oakleigh
- Oakleigh Hall, Oakleigh
- Oakwood School Frankston Campus, Frankston
- Oasis Play Therapy and Counselling, Diamond Creek
- Oasis Pure Greek Coffee, Mulgrave
- Obriens Removals, Mornington
- Ocean Pilates, Crib Point
- Odfjell Australia Pty Ltd, Melbourne
- Office Cloud, Cremorne
- Office Space Melbourne, co working space, shared space Melbourne, Melbourne
- Office of Projects Victoria, East Melbourne
- OfficeDynamics, Campbellfield
- OfficeMax Australia, Richmond
- Officer City Soccer Club, Pakenham
- Officer Community Hub, Officer
- Offshore Boat Builders, Mitchell
- Oh Wow Coffee, Maidstone
- Old Eltham Collegians, Research
- Old Haileyburians Cricket Club, Keysborough
- Old Paradians Football Club, Bundoora
- Old Shire Offices, Heidelberg
- Olinda Community House, Olinda
- Olive Computer Repairs, Lilydale
- Olive Tree Cooking School, Frankston South
- Oliver Hume Corporation, Southbank
- Ombra, Melbourne
- Omega Finance, Greensborough
- On Cue, Fyshwick
- One Community Church, Blackburn
- One Planet Communications, Endeavour Hills
- One Spoon Two Spoon Photography, Clyde North
- One Star Group, Franklin
- One Stop Auto & Tyres, Fyshwick
- One on One Computer Services PTY LTD, Malvern
- One on One Counselling, Wantirna
- One-Photographic, Prahran
- Onsite Computer Servicing Caulfield, Caulfield
- Ontoit, Canberra
- Ontrak centre, Camberwell
- Onya Bike, Phillip
- Onyx Constructions, Melbourne
- Open General, Mentone
- Open Space Infrastructure Australia, Mentone
- Operations Centre Dandenong, Dandenong
- Oppikofer Joinery Canberra -Swiss Quality Kitchens, Queanbeyan West
- Opposite Lock Canberra, Queanbeyan East
- OptiStart Chiropractic, Berwick
- Optimal Chiropractic Clinic - Dr Georgia Davis, Kilsyth
- Optimal Health Chiropractic Family & Sports Clinic, Westmeadows
- Optimal Wellness Chiropractic, Mooroolbark
- Optimum Function Chiropractic & Sports Injury Centre, Williams Landing
- Optimum Function Chiropractic & Sports Injury Centre, Hoppers Crossing
- Optimus Business Solutions, Canberra
- Oracle Courses, Melbourne
- Orchard Road Community & Early Learning Centre, Doreen
- Ordinary Coffee and Eats, Toorak
- Oriental Spoon 2, Melbourne
- Orion's Dental Lilydale, Lilydale
- Orion's Dental Springvale, Springvale South
- Ormita Commerce Network Melbourne Barter Exchange, Melbourne
- Ormond Anglican Church, Ormond
- Orwil Street Community House Inc, Frankston
- Osteria 20, Hawthorn
- Otao Kitchen Cooking Classes, Food Tours, Events, Richmond
- Otao asian cooking school, Richmond
- Our Bars & Gigs, Richmond
- Our Butcher, Phillip
- Our Eulogy, Arthurs Seat
- Our Lady of Mercy College, Heidelberg
- Our Lady of Victories Primary, Camberwell
- Our Ladys Primary School, Surrey Hills
- Outback Computers, Melbourne
- Outdoor Blinds ACT | Artificial Grass Lawns & Roller Shutters - Australian Outdoor Living, Queanbeyan West
- Outer Eastern Lutheran Church, Croydon
- Outlook (Vic) Inc, Pakenham
- Outsource Financial, Melbourne
- OverElles, Briar Hill
- Ovoc Solutions, Lilydale
- Oxley Christian College, Chirnside Park
- Oxley Kids - Early Learning Centre, Chirnside Park
- Oyam Park Open Garden, Keilor East
- OzFlatPacks, Mitchell
- O’Heart & Associates, Gardenvale
- one2one photography, Rangeview
- onemilegrid (one mile grid), Collingwood