Taken from Category:Wikipedia articles incorporating text from the USGS Geographic Names Information System
- Mathys Bank
- Matikonis Peak
- Mount Matin
- Matkah Point
- Matney Peak
- Matsch Ridge
- Matsumoto Pond
- Matsuyama Rocks
- Matterhorn (Antarctica)
- Matterson Inlet
- Matthes Glacier
- Matthews Glacier
- Matthews Island
- Matthews Peak
- Matthews Point
- Matthews Ridge
- Mount Matthias
- Mattox Bastion
- Matusevich Glacier
- Mount Matz
- Maud Rise
- Maud Seamount
- Maud Subglacial Basin
- Cape Maude
- Mauger Nunatak
- Maumee Bight
- Maumee Ice Piedmont
- Maurice Channel
- Maurstad Point
- Maury Bay
- Maury Glacier
- Mautino Peak
- Mawson Bank
- Mawson Coast
- Mawson Corridor
- Mawson Escarpment
- Mawson Glacier
- Mawson Peninsula
- Cape Mawson
- Maxwell Bay (Antarctica)
- Cape May (Antarctica)
- May Glacier
- May Peak
- May Valley
- Maya Mountain
- Mayeda Peak
- Mayer Crags
- Mayer Hills
- Mayewski Peak
- Mount Mayhew
- Mayman Nunatak
- Mayo Peak
- Cape Mayo
- Mayr Ridge
- Mazza Point
- Mazzeo Island
- Mount McAllister
- McAllister Hills
- Mount McArthur (Antarctica)
- McArthur Glacier
- McCafferty Spur
- McCain Bluff
- McCall Point
- McCallum Pass
- Mount McCallum
- McCalman Peak
- McCance Glacier
- Mount McCann
- McCann Glacier
- McCann Point
- McCarroll Peak
- Mount McCarthy (Prince Charles Mountains)
- McCarthy Glacier
- McCarthy Inlet
- McCarthy Island (Kemp Land)
- McCarthy Island (South Georgia)
- McCarthy Point
- McCarthy Ridge
- McCarthy Valley
- Mount McCarthy (Victoria Land)
- Mount McCauley
- McCauley Rock
- McCaw Ridge
- McClary Glacier
- McClary Ridge
- McCleary Glacier
- McClelland Ridge
- McClintock Point
- McClintock Ridge
- McClinton Glacier
- Mount McClung
- McCollum Peak
- McConchie Ridge
- McConnel Islands
- Mount McCormick
- Cape McCormick
- Mount McCoy
- McCraw Glacier
- Mount McCrory
- McCuistion Glacier
- McDonald Bank
- McDonald Bay
- McDonald Beach
- McDonald Heights
- McDonald Ice Rumples
- Mount McDonald
- Mount McElroy
- McElroy Glacier
- McElroy Ridge
- McFarlane Strait
- McGaw Peak
- McGee Rock
- Mount McGee
- McGinnis Peak
- McGrady Cove
- Mount McGrath
- McGregor Glacier
- McGuire Island
- McHugo Peak
- McIlroy Peak
- McIntosh Cliffs
- Mount McIntosh
- McIntyre Promontory
- McKaskle Hills
- McKay Creek
- McKay Valley
- McKellar Glacier
- Mount McKelvey
- McKelvey Valley
- Mount McKenny
- Mount McKenzie
- Mount McKeown
- Mount McKercher
- Mount McKerrow
- Mount McKibben
- McKinley Peak
- McKinnis Peak
- McKinzie Islands
- McKnight Creek
- McLaughlin Cliffs
- McLaughlin Peak
- McLay Glacier
- McLean Buttress
- McLean Peak
- McLeod Glacier (South Orkney Islands)
- McLeod Glacier (Wilson Hills)
- McLeod Massif
- Mount McMahon
- McMahon Glacier
- McManus Glacier
- McMorrin Glacier
- McMullin Island
- McMurdo Ice Shelf
- Cape McNab
- McNally Peak
- McNamara Island
- Mount McNaughton
- McNeile Glacier
- McPherson Crags
- McPherson Peak
- McSaveney Spur
- McSweeney Point
- McWhinnie Peak
- Meade Nunatak
- Meads Peak
- Meander Glacier
- Meares Cliff
- Mechanics Bay (Heard Island)
- Mechnikov Peak
- Medea Dome
- Medhalsen Saddle
- Medhovden Bluff
- Median Snowfield
- Mount Medina
- Medina Peaks
- Medley Ridge
- Medley Rocks
- Medmulen Spurs
- Medusa Peak
- Medusa Pool
- Medvecky Peaks
- Meek Channel
- Mount Meeks
- Mefford Knoll
- Mefjell Glacier
- Mefjell Mountain
- Megalestris Hill
- Megaw Island
- Mehaugen Hill
- Meholmen Island
- Meier Peak
- Meier Point
- Meier Valley
- Meiklejohn Glacier
- Meinardus Glacier
- Mount Meister
- Meknattane Nunataks
- Mel Moraine
- Melania Ridge
- Mount Melania