- Marten Island
- Martin
- Martin Island
- Martin Island
- Martin Islands
- Mary Island
- Mary Island
- Mary Island
- Marys Igloo
- Marys Rock
- Matanuska
- Matushka Island
- Maurelle Islands
- Mavis Island
- May Creek
- McCallum
- McCarthy
- McClellan Group
- McClellan Rock
- McClure Islands
- McCord
- McCulloch Rock
- McDonald Islands
- McDougal
- McFarland Islands
- McGrath
- McHenry Islet
- McKenzie Rock
- McKinley Park
- McNeil Islet