- Magnetawan River Resort, Britt
- Maitland Shores, Dunnville
- Maitland Valley Marina & Resort Park, Goderich
- Manitoulin Resort, Manitowaning
- Mansfield Outdoor Centre, Mansfield
- Maple Grove Christian Retreat Centre, Thamesford
- Maple Grove Trailer Park, Puslinch
- Maples RV Park, Cornwall
- Maplewood Acres RV Park, Bainsville
- McCreary's Beach Resort, Perth
- McGowan Lake Campground, Maberly
- Meadowbrook Campground, Alliston
- Meadows End Trailer Park, Orillia
- Miller's Family Camp, Miller Lake
- Milton Heights Campground, Milton
- Mitchell's Bay Marine Park, Mitchell's Bay
- Mohawk Bay Park & Campground, Deseronto
- Muskoka Falls Trailer Park, Kilworthy
- Nestle In Cottage & RV Resort, Dunsford
- New Lowell Campground & Conservation Area, New Lowell
- Neys Lunch & Campground, Marathon
- Nicolston Dam Campground & Travellers Park, Alliston
- Nith River Campground, New Hamburg
- Noelville Family Resort, Noelville
- Nor-Halton Park, Acton
- Norm's Tent & Trailer Park, Kagawong
- North Sauble Sands Campground, Wiarton
- North Shore RV Park, Carrying Place
- Northwestern Tent and RV Park, Dryden
- Oakridge Family Campground, Thedford
- Opeongo Mountain Resort, Eganville
- Orchard View Park, Lambton Shores
- O'Reilly Lake Resort, Mountain Grove
- Oro Family Campground, Oro Station
- Ottawa's Poplar Grove Trailer Park, Ottawa
- Otter's Edge Estates, Vienna
- Our Ponderosa Cottage & RV Resort, Forest
- Owen Sound KOA Journey, Owen Sound
- Paradise Valley, Plympton Wyoming
- Parry Sound KOA Holiday, Parry Sound
- Paul Bunyan Lake Front Resort, Bayfield
- Picnic Island Resort, Honey Harbour
- Pigeon Hollow Park, Bobcaygeon
- Pike Lake Campgrounds, Clifford
- Pineaires Resort, Buckhorn
- Pine Cliff Resort, Combermere
- Pine Echo Camp, Wroxeter
- Pine Lake Campground, Bayfield
- Pine Ridge Park Campground & Rustic Cabin Rental, Pembroke
- Pine Valley Park Campground Resort, Branchton
- Pine Vista Resort, Lakefield
- Pleasure Park RV Resort, Mallorytown
- Point of Mara Resort & Trailer Park, Brechin
- Ponderosa Campground, Mount Albert
- Primrose Park, Mono
- Prospect Hill Campground, Granton
