Services for O
- Oak Tree School (independent specialist provision)
- Oasis Childcare Centre - After School Club
- Oasis Childcare Centre - Day Nursery
- Oasis Childcare Centre-Breakfast Club
- Oasis Childcare Centre-Holiday Scheme
- Obby Oss Festival
- Ocean Hill Lodge Residential Care Home
- Ocean Housing
- Office of the Public Guardian
- OFSTED
- The Old Manor House
- The Old Roselyon Domicilary Care Agency
- The Old Roselyon Manor Nursing Home
- Old Vicarage Care Home
- Once Upon A Time Breakfast Club
- Once Upon A Time Day Nursery
- One Nine Five - Residential home for young adults with learning disabilities
- One Stop Social
- One to One Mentoring
- Online Childminder Registration Course
- Online Learning College
- Online Reference Library
- Open Air Cinema @ Pendennis Castle
- Open Air Cinema Screenings @ Portminster Beach
- Open Door Training and Day Care Centre
- Open Garden at Polgwynne - Truro
- Options Group
- Options Kernow
- Orchard Park Childcare - Penny Craig
- OTIS Group - Support Group for Carers in Camborne
- Otterham Community Primary School
- Our House
- Out to Play in Cornwall
- The Outdoor Project - St Austell
- Outlook South West
- Overeaters Anonymous - Camborne Group