M
- (Skeena-Queen Charlotte Regional District) Masset
- (Regional District of Fraser-Fort George) McBride
- Midway
- (Skeena-Queen Charlotte Regional District) Middle Lawyer Island
- (Regional District of Alberni-Clayoquot) Mence Island
- (Skeena-Queen Charlotte Regional District) Maast Island
- (Regional District of Mount Waddington) Mabbott Island
- (Regional District of Fraser-Fort George) MacArthur Island
- (Sunshine Coast Regional District) Macdonald Island
- (Skeena-Queen Charlotte Regional District) Mackenzie Island
- (Regional District of Mount Waddington) Madrona Island
- (Regional District of Mount Waddington) Magin Islets
- (Northern Rockies Regional Municipality) Magnum Mine
- (Regional District of Mount Waddington) Mahatta River
- (Regional District of Kitimat-Stikine) Maitland Island
- (Regional District of Mount Waddington) Makwazniht Island
- (Regional District of Mount Waddington) Malcolm Island
- (Sunshine Coast Regional District) Malibu Islet
- (Central Coast Regional District) Mallory Islands
- (Regional District of Kitimat-Stikine) Man Island
- (Central Coast Regional District) Manley Island
- (Strathcona Regional District) Mansons Landing
- (Cowichan Valley Regional District) Maple Bay
- (Skeena-Queen Charlotte Regional District) Marble Island
- (Regional District of Alberni-Clayoquot) Marchant Islet
- (Skeena-Queen Charlotte Regional District) Marco Island
- (Capital Regional District) Marigold
- (Skeena-Queen Charlotte Regional District) Markle Island
- (Regional District of Alberni-Clayoquot) Marktosis
- (Skeena-Queen Charlotte Regional District) Marrack Island