- MA
- Maag
- Mabel
- Maben
- MacAbata
- MacAione
- MacAk
- MacAtee
- MacAulay
- MacBeth
- MacDonald
- MacDougall
- MacGregor
- Mach
- Mack
- MacKay
- MacKenzie
- MacKey
- MacKie
- MacKlin
- MacKo
- MacLachlan
- MacLaren
- MacLean
- MacLeod
- MacMillan
- MacNab
- MacRae
- MacRay
- MacUiba
- MacVicar
- Madden
- Madey
- Madia
- Madrid
- Madsen
- Madura
- Maeda
- Maekawa
- Maertens
- Magar
- Magasich
- Mage
- Magee
- Maginnis
- Magner
- Magnuson
- Magnusson
- Magorty
- Magruder
- Magsipoc
- Maguire
- Mahalko
- Mahan
- Maher
- Mahon
- Mahoney
- Mahrt
- MAI
- Maichel
- Maier
- Maillet
- Maim
- Main
- Majcher
- Major
- Majors
- Malaspino
- Malay
- Malbon
- Malcolm
- Maldonado
- Malgarini
- Malinowski
- Malkin
- Mallinson
- Mallock
- Mallory
- Mallow
- Malloy
- Malnar
- Malnerich
- Malolepsy
- Malone
- Maloney
- Malott
- Maltby
- Mam
- Mampel
- Manahan
- Manaro
- Mancano
- Mandell
- Manderscheid
- Mangan
- Manley
- Manly
- Mann
- Manning
- Mannix
- Mano
- Mansfield
- Mansisidor
- Manthie
- Mantle
- Manuel
- Manuskueper
- Manzieris
- Manzin
- Mar
- Maranville
- Marasco
- Marbles
- Marcisak
- Marcus
- Mardesich
- Mardock
- Margason
- Margitan
- Margrath
- Margulies
- Maricich
- Marien
- Marinkovich
- Marioni
- Marisseau
- Mark
- Marker
- Markham
- Markl
- Markle
- Markley
- Markman
- Marks
- Markwart
- Markwood
- Marley
- Marlow
- Marquardson
- Marquardt
- Marquez
- Marquis
- Marr
- Marsh
- Marshall
- Marston
- Martel
- Martens
- Martensen
- Martenson
- Martin
- Martinez
- Martini
- Martinsen
- Martinson
- Marvin
- Marx
- Maryniak
- Masaki
- Mascall
- Mascher
- Maschhoff
- Maschmeier
- Maser
- Maslan
- Masmela
- Mason
- Massey
- Massie
- Massinga
- Mast
- Masterson
- Matarangas
- Matchett
- Mates
- Math
- Matheny
- Mathers
- Matheson
- Mathews
- Mathiason
- Mathies
- Mathieu
- Mathis
- Mathisen
- Mathison
- Mathus
- Matison
- Matlock
- Matson
- Matsudaira
- Matsumoto
- Mattausch
- Matteo
- Matter
- Mattern
- Mattes
- Matteson
- Matthes
- Matthew
- Matthews
- Matthias
- Mattoon
- Mattox
- Mattson
- Matyas
- Mau
- Maughan
- Maughlin
- Maunsell
- Maupin
- Maurel
- Maurer
- Mauritsen
- Maxson
- Maxum
- Maxwell
- May
- Mayeda
- Mayer
- Mayerfeld
- Mayes
- Mayfield
- Maykut
- Maynard
- Mayo
- Mayock
- Mays
- Mazurkiewicz
- Mazzarella
- Mc Carthy
- McAdam
- McAdams
- McAdoo
- McAleer
- McAllister
- McAlpin
- McAlpine
- McArthur
- McAvoy
- McBee
- McBerry
- McBride
- McBurney
- McCabe
- McCaffray
- McCalister
- McCall
- McCallister
- McCallum
- McCammon
- McCann
- McCarrell
- McCarthy
- McCartt
- McCauley
- McChesney
- McClarron
- McClaskey
- McCleery
- McClellan
- McClenon
- McClintock
- McClinton
- McCloskey
- McClung
- McClure
- McCluskey
- McCollum
- McComb
- McConaughy
- McCone
- McConnachie
- McConney
- McCord
- McCormack
- McCormick
- McCosh
- McCoy
- McCracken
- McCraith
- McCray
- McCrea
- McCready
- McCreery
- McCrory
- McCullar
- McCullem
- McCulloch
- McCullough
- McCune
- McCutcheon
- McDade
- McDaniel
- McDaniels
- McDermott
- McDevitt
- McDiarmid
- McDonagh
- McDonald
- McDonnal
- McDonnell
- McDonough
- McDougall
- McDuffie
- McElevey
- McElhinney
- McElroy
- McElvain
- McElvaney
- McEoroy
- McEver
- McEvoy
- McEwan
- McEwen
- McFarland
- McFarlane
- McFarlin
- McFeely
- McFeron
- McGary
- McGaughey
- McGaw
- McGee
- McGeough
- McGettigan
- McGibbon
- McGill
- McGilvra
- McGinnis
- McGirr
- McGlasson
- McGlone
- McGoodwin
- McGough
- McGoun
- McGovern
- McGowan
- McGrath
- McGraw
- McGregor
- McGrew
- McGuire
- McHarg
- McHugh
- McIlvaine
- McIntosh
- McIntyre
- McIsaac
- McJohn
- McKaughan
- McKay
- McKee
- McKeever
- McKeirnan
- McKelvey
- McKenney
- McKenzie
- McKernan
- McKibben
- McKillop
- McKim
- McKinlock
- McKinney
- McKnight
- McKoy
- McLane
- McLaughlin
- McLean
- McLendon
- McLeod
- McMahan
- McMahon
- McMahon-Grace
- McManus
- McMath
- McMillan
- McMillen
- McMorran
- McMuldroch
- McMullen
- McMurdie
- McMurray
- McMyler
- McNabb
- McNally
- McNamee
- McNaughton
- McNeal
- McNeil
- McNeill
- McNeilly
- McNevin
- McNichols
- McNulty
- McNutt
- McOmber
- McPeek
- McPhaden
- McPherson
- McPhillips
- McQuary
- McRae
- McRill
- McSharry
- McShea
- McSmith
- McTaggart
- McVay
- McVey
- McVicar
- McWhinnie
- McWilliams
- Meacham
- Mead
- Meade
- Meader
- Meagher
- Mealand
- Mealy
- Means
- Meardon
- Mears
- Medeiros
- Medema
- Medica
- Medilo
- Medina
- Medjo
- Medlock
- Medrano
- Mee
- Meechan
- Meehan
- Meeks
- Megale
- Mehrer
- Mehrtash
- Mei
- Meier
- Meing
- Meinhardt
- Meissner
- Mekuria
- Melander
- Melby
- Melgard
- Melhus
- Melin
- Meline
- Mellis
- Mellor
- Melone
- Melonson
- Melrose
- Melsness
- Meltzer
- Melvin
- Memmer
- Menaglia
- Menase
- Menashe
- Menchhofer
- Mendenhall
- Mendes
- Mendoza
- Meneses
- Mengedoht
- Menges
- Menjivar
- Menke
- Mennella
- Mensalvas
- Mensing
- Mentele
- Menzies
- Menzl
- Merca
- Mercer
- Meredith
- Merkel
- Merki
- Merkle
- Merlino
- Merlyn
- Merrell
- Merrihew
- Merrill
- Merritt
- Merryweather
- Meryhew
- Merz
- Mesler
- Messina
- Metastasio
- Metcalf
- Metch
- Metheny
- Metz
- Metzinger
- Metzler
- Meulbroek
- Meun
- Meuse
- Mewcomb
- Meyer
- Meyerding
- Meyers
- Mezich
- Miaullis
- Michael
- Michaelian
- Michaels
- Michalak
- Michalek
- Michalsen
- Michaud
- Michel
- Michels
- Michelson
- Michl
- Mickel
- Mickelsen
- Mickelson
- Micklin
- Micona
- Middelton
- Middleton
- Midkiff
- Mierow
- Mifflin
- Migliorini
- Migula
- Mihaly
- Mihalyo
- Mihok
- Mihoulides
- Mikkelsen
- Miklosh
- Milan
- Mildes
- Milene
- Miles
- Milette
- Miley
- Mill
- Millar
- Millard
- Millat
- Miller
- Millikan
- Milliman
- Millinger
- Milliren
- Millsap
- Milne
- Milner
- Milnor
- Milodragovich
- Milosavljevic
- Milton
- Mims
- Min
- Minaglia
- Minard
- Minato
- Minch
- Minden
- Miner
- Mines
- Minev
- Mingeaud
- Minier
- Miniken
- Minnis
- Minor
- Mintek
- Minter
- Mintz
- Minzel
- Miquel
- Mirante
- Mirenzi
- Mirick
- Mise
- Misher
- Misshula
- Missler
- Mitchell
- Mithoug
- Mitoma
- Mitrani
- Mitsakos
- Mitsuda
- Mittenthal
- Mittet
- Miyake
- Miyamoto
- Miyanaga
- Miyano
- Miyata
- Miyauchi
- Mizelle
- Mizrahi
- Mjelleli
- Mjolsnes
- Moberg
- Mockett
- Modell
- Moe
- Moede
- Moehring
- Moeller
- Moens
- Mogelgaard
- Mohr
- Mohundro
- Moini
- Moir
- Moji
- Mok
- Moldenhour
- Moldrem
- Mole
- Moliga
- Molin
- Moll
- Mollette
- Mollman
- Mollohan
- Molloy
- Molvik
- Momcilovich
- Mon
- Monaco
- Monaghan
- Moncada
- Mondrzyk
- Monette
- Moneymaker
- Monjay
- Monji
- Monk
- Monks
- Monrad
- Monroe
- Monschein
- Monsen
- Monsey
- Monson
- Montague
- Montana
- Montano
- Montclair
- Montecillo
- Monteiro
- Monteith
- Montejano
- Montgelas
- Montgomery
- Monti
- Monton
- Montoya
- Mooers
- Moon
- Mooney
- Moor
- Moore
- Moores
- Mooris
- Moorman
- Moors
- Morada
- Morales
- Moran
- Morda
- Mordhorst
- Morehead
- Moreland
- Moresky
- Morgan
- Morgensztern
- Mori
- Moriarity
- Moriarty
- Morikawa
- Morin
- Mork
- Morke
- Morlier
- Morones
- Moroney
- Morrell
- Morris
- Morrison
- Morrow
- Morse
- Mortensen
- Mortenson
- Morton
- Moseley
- Mosely
- Moser
- Moshcatel
- Mosher
- Moshinsky
- Moskito
- Moskowitz
- Mosman
- Moss
- Mossberg
- Mote
- Moton
- Mott
- Motter
- Motyl
- Motz
- Mouat
- Mougin
- Moulton
- Moungchanh
- Mount
- Mousley
- Mowrer
- Moxley
- Moy
- Moyer
- Mrachek
- Muchmore
- Mucklestone
- Mudri
- Mueller
- Muench
- Muir
- Mukai
- Mukherji
- Mulherkar
- Mullen
- Muller
- Mulligan
- Mullin
- Mullins
- Mullooly
- Mumford
- Mundahl
- Mundee
- Munger
- Munhall
- Munn
- Munoz
- Munro
- Munsey
- Munson
- Munteanu
- Muntifering
- Munz
- Murai
- Murakami
- Muralles
- Murante
- Murdoch
- Murdock
- Murillo
- Murphey
- Murphy
- Murray
- Murrish
- Murry
- Murshteyn
- Murtfeldt
- Muse
- Musgrave
- Mushen
- Mussetter
- Musso
- Muters
- Muth
- Muzio
- Myer
- Myers
- Myhre
- Myklestad
- Mykris
- Myles
- Myraas