- Maasdorp, Andries Ferdinand Stockenström
- Maasdorp, Christian George
- Maberly, Alexander Cahill
- Mabson, John
- MacAlpin, Daniel Rankin
- Macan, George
- Macartney, Carlile Henry Hayes
- Ellison-Macartney, John William
- Ellison-Macartney, William Grey
- Macaskie, Stuart Cunningham
- Macaulay, Charles Zachary
- Macaulay, Henry Denman
- Macauley, James
- McCall, Robert Alfred
- McCalmont, Hugh Barklie Blundell
- McCarthy, James Abram
- McCaul, Samuel
- MacClymont, Colin Ritchie
- McCoan, James Carlile
- Maccoll, Norman
- MacConkey, William Dixon
- McConnell, James Alexander Boyle
- McConnell, John Wanklyn
- McConnell, William Robert
- McCullagh, James Samuel Gordon
- McDermott, Frederick
- MacDermott, Hugh Francis
- Robertson Macdonald, David Macdonald
- Macdonald, Henry Lumley
- McDonald, John
- Macdonald, Thomas
- Macdonell, George Paul
- Macdonell, John
- Cheevers-McDonnell, Christopher
- MacDonnell, Hercules Henry Graves
- McDonnell, John Randall
- McDonnell, Morgan Augustin
- MacDonnell, Randall
- McDougal, Thomas Duncan
- McDougall, Alexander William
- McEwen, John Forrester
- MacEwen, Robert Sutherland Taylor
- McGauran, Michael Joseph
- MacGeagh, Benjamin Scott Foster
- MacGeorge, William Henry
- Turner-MacGowan, Edward
- MacGregor, John
- Macgregor, John Cameron
- Macgregor, Peter
- McGrigor, Walter Grant James
- McIntyre, Æneas John
- McIntyre, Alexander Grant
- McIntyre, Angus George Milward
- McIntyre, John
- McIver, Lewis
- Mackarness, Frederic Michael Coleridge
- Mackay, Alexander Spencer Henry
- Mackay, Hugh William Boyd
- Mackay, Thomas Henry
- Mackean, Ernest
- McKeand, Charles Pilling
- McKellar, Martin William
- Mackenzie, Henry Gordon
- Muir-Mackenzie, Kenneth Augustus
- Muir-Mackenzie, Montague Johnstone
- Mackenzie, Robert
- Mackenzie, William
- Mackenzie, William Dalziel
- Mackenzie, William Laurence
- McKerrell, Ralph Staveley
- Mackeson, William Wyllys
- Mackey, Archibald John
- Mackey, Arthur Johnston
- Mackey, John Alexander Dixie
- Mackillop, Charles William
- Mackinnon, Donald
- Mackintosh, Campbell Keir
- Mackonochie, James
- Mackreth, Robert Welch
- McLachlan, David
- McLachlan, Thomas Hope
- Maclaine, William Osborne
- Maclaren, Alexander David
- McLaren, Charles Benjamin Bright
- MacLaren, Charles Edward
- Maclaren, James Joseph
- Maclean, Francis William
- Howard-McLean, John Robert
- McLean, Robert Donald Douglas
- Macleay, Oswell Sullivan
- Maclennan, Donald
- Macleod, Donald Grant
- Macleod, Edward George
- Macleod, Henry Dunning
- Macleod, Simon John Fraser
- McMahon, Lionel
- McMaster, John George
- Macmeikan, John Alexander
- McMicking, Alexander
- Macmillan, Alexander
- McMillan, John
- Macmillan, Malcolm Reginald
- McMillan, Robert Furse
- McMorran, Alexander
- Macnaghten, Edward
- Macnaghten, Steuart
- Macnamara, Walter Henry
- McNaughton, David Norman
- McNeill, Alexander
- McNish, Alexander Copland
- McNiven, Henry
- MacOubrey, John
- MacOubrey, William
- Macpherson, Alan
- Macpherson, Arthur George
- Macpherson, George Morison
- Macpherson, Hugh Martin Charters
- Macpherson, John
- Macpherson, John Molesworth
- Macpherson, William
- Macrae, Charles Colin
- Macrae, David Cato
- Macrory, Edmund
- MacSwinney, Robert Forster
- Mactaggart, William Charles
- Mactier, Alexander Waller
- McWatters, George
- McWhinnie, Sydney Bryant
- Madden, William Henry
- Maddy, Edwin Davis
- Maddy, Thomas Herbert
- Maguire, James Rochfort
- Maguire, Thomas
- Mahmud, Syed (Hon.)
- Mahon, James Nicholas
- Mahon, John Maurice
- Mahon, Thomas George Stacpoole
- Maidlew, John Mott
- Main, David Forsyth
- Main, Francis
- Maine, Charles Sumner
- Maine, Sir Henry James Sumner
- Mainprise, William Turley
- Massey-Mainwaring, Hon. William Frederick Barton
- Maitland, Alexander Charles Richards
- Maitland, Frederic William
- Maitland, Keith
- Maitland, Thomas Archibald Fuller
- Maitland, Thomas Fuller
- Maulvi Mohammed Abdool Majid
- Major, Pryce Athawes
- Makins, Henry Francis
- Makins, Col. William Thomas
- Makinson, Joseph
- Malcolm, Neill
- Malcolm, William Rolle
- Malden, Charles Edward
- Malkin, Herbert Charles
- Malleson, Mortimer Drewe
- Mallik, Maumath Chandon
- Man, Edward Garnet
- Man, Harry Charles Hannam
- Man, Septimus
- Manby, Harry Lyndsay
- Mangles, James Henry
- Manisty, George Eldon
- Manisty, Sir Henry
- Manisty, Herbert Francis
- Ganpat Sarvottam Mankar
- Mann, Horace
- Manning, Charles James
- Manning, Henry John
- Manning, William Hubert
- Manning, Sir William Montagu
- Manning, William Woodward
- Cursetjee Manockjee
- Manphûl, Surajbal
- Mansfield, Alexander John
- Mansfield, Edward
- Mansfield, Horatio
- Mansfield, John Smith
- Mansfield, Hon. John William
- Mansfield, Robert Blachford
- Manson, Edward William Donoghue
- Mantell, Sir John Iles
- Le Marchant, Sir Henry Denis
- Marchant, James Robert Vernam
- Marcy, George Nichols
- Marett, Charles
- Marjoribanks, Hon. Edward
- Markby, William
- Markwick, Edward
- Marples, Benjamin Livingston
- Marples, George Jobson
- Marrack, Richard Gubbs
- Marriott, Charles
- Marriott, Thomas Weatherley Montague
- Marriott, William Thackeray
- Marrow, Edward Armfield
- Marsden, Delabene Weston
- Marsden, Frederick John
- Marsden, Reginald Godfrey
- Marshall, Alexander Chalmers
- Marshall, Frederic
- Marshall, George William
- Marshall, James (b.?)
- Marshall, James (b.1829)
- Marshall, John (b.?)
- Marshall, John (b.1820)
- Marshall, John (b.1845)
- Marsham, Robert Henry Bullock
- Marten, Alfred George
- Martin, Charles
- Martin, Edward
- Martin, Eustace Meredyth
- Martin, George Edward
- Martin, George Peter
- Martin, John Stapleton
- Martin, Marcus
- Martin, Marcus Trevelyan
- Martin, Thomas Alexander
- Martin, William John
- Martin, William Thomas
- Martineau, Alfred
- Martineau, John
- Martineau, Philip Meadows
- Martyn, Orlando Bridgman
- Masey, Thomas Adair
- Mashiter, William
- Maskell, John Morris
- Maskell, Walter Hector
- Story-Maskelyne, Edmund Marvin Booth
- Maskew, William Henry
- Mason, Francis George Montagu
- Mason, Frederic La Tour
- Mason, George
- Mason, Robert Harvey
- Mason, William Henry
- Massey, Charles Carleton
- Massey, Thomas
- Massey, William
- Master, Charles Gilbert
- Masterman, William
- Masters, Cornelius Cardew
- Masters, Edward Robert
- Masujima, Roknishiro
- Matcham, Nelson
- Mathew, (Hon.) Sir James Charles
- Mathews, Charles Willie
- Mathews, Ernest
- Mathews, John Hubbersty
- Mathews, Le Do Frederick
- Mattel, Alfred
- Matthews, Arthur John
- Matthews, Henry
- Matthews, John Leonard
- Mattinson, Miles Walker
- Maude, Ashley Henry
- Maude, Gerald Edward
- Maude, Thomas William
- Maude, William Cassell
- Maule, George Norman
- Maule, Sir John Blossett
- Maurice, Charles Edmund
- Maxwell, Frederick David
- Maxwell, Frederick Mackenzie
- Maxwell, Joseph Renner
- Maxwell, Sir Peter Benson
- Heron-Maxwell, Robert Charles
- Maxwell, Walter
- May, Bowen
- May, Thomas Baker
- May, Rt. Hon. Sir Thomas Erskine
- Mayd, William
- Mayer, George Clifford
- Mayhew, Charles Jeremiah
- Mayne, Henry Blair
- Mayne, John Dawson
- Mayne, Robert Dawson
- Mazzinghi, Thomas John
- Mead, Frederick
- Mears, Thomas Lambert
- Meates, Thomas Arrowsmith
- Medd, Charles Septimus
- Medlicott, Henry Edmondstone
- Medlycott, Edward Bradford
- Medwin, Frederick Andrew
- Meek, John Edward
- Meek, William Alfred
- Meeking, Charles
- Meenacshaya
- Meeson, John Thomas
- Megone, William Bernard
- Mehta, Phirozeshah Meherwanjee
- Meiklejohn, David Ogilvy
- Meinertzhagen, Ernest Louis
- Mellish, Henry
- Mellor, Charles
- Mellor, Francis Hamilton
- Mellor, George Henry
- Mellor, James Robert
- Mellor, Rt. Hon. Sir John
- Mellor, John William
- Melsheimer, Rudolph Eyre
- Melvill, William Henry
- Melville, Robert
- Mendes, Lewis Adonijah
- Stuart-Menteath, Andrew Agnew
- Menzies, Robert Stewart
- Mercer, John
- Mercer, Nicholas Algernon
- Mercer, Richard
- Meredith, Henry Hills
- Merewether, Walton Lockyer
- Merivale, Herman Charles
- Merivale, Reginald
- Merrick, Henry
- Merrifield, Frederic
- Merton, Joseph Sidney
- De Meschin, Thomas
- Metcalfe, Douglas Metcalfe
- Metcalfe, Gilbert
- Metcalfe, Kennard Golborne
- Metcalfe, William Austin
- Metcalfe, William James
- Metge, Robert Henry
- Methold, Thomas Tindal
- Methuen, Rev. Thomas Plumptre
- Mew, George
- Mew, James
- Mews, John
- Meynell, Edgar, jun.
- Meynell, Edgar John
- Meyricke, Robert Henry
- Michael, John Michael
- Michael, Sydney Batchelor
- Michael, William Henry
- Michel, Louis Jean Arthur
- De Michele, Leopold John Manners
- Michell, Edward Blair
- Michell, Richard Brooke
- Michie, Sir Archibald
- Micholls, Edward Montefiore
- Micholls, Sydney Philip
- Micklem, Nathaniel
- Micklethwait, John Pollard
- Middleton, Clement Alexander
- Middleton, Hastings Nathaniel
- Middleton, James William
- Middleton, John Page
- Middleton, Percy
- Middleton, Robert Marshall
- Midleton, Viscount (William Brodrick)
- Mildmay, George St. John
- Miles, Herbert Scott Gould
- Milford, Henry
- Millar, Frederick Charles James
- Millar, George Thomas John
- Miller, Albert Birmingham
- Miller, Alexander Edward
- Miller, Edward Alexander
- Miller, George (b.1815)
- Miller, George (b.1833)
- Miller, Granville George
- Miller, John Robertson Shedden
- Miller, Richard Cleghorn
- Miller, Robert
- Miller, Robert Byron
- Miller, Vernon Leslie Eden
- Millett, Henry
- Milligan, William Henry
- Mills, Arthur
- Mills, Francis
- Mills, Frederick Charles
- Mills, Henry Maynard
- Mills, Robert Forster
- Mills, William Primrose
- Milltown, Earl of (Edward Nugent Leeson)
- Millwood, William
- Milman, Arthur
- Milman, Henry Salusbury
- Milman, Sir William, Bart.
- Milne, Alfred
- Milne, Frank Alexander
- Milne, Henry Ernest
- Milne, John Adam
- Milne, William
- Milner, Alfred
- Milner, Dennis
- Milner, William Aldam
- Milton, Henry
- Milton, William Bunce
- Milvain, Thomas
- Milward, Clement
- Minet, William
- Mirams, Augustus
- Mirehouse, William Edward
- Mitchell, Augustus Andrew
- Mitchell, Charles Thomas
- Mitchell, Edward Fanecourt
- Mitchell, Hugh
- Mitchell, James
- Mitchell, Robert William Tarn
- Mitchell, Thomas John
- Mitchell, William
- Mitchell, William Henry
- Mitchison, Arthur Maw
- Mitra, Avinasa Chandon
- Mitra, Krishna Nath
- Mitra, Narendra Natha
- Mittra, Pramattra Nath
- Mittra, Raj Narain
- Modi, Jijibhai Edalji
- Moffat, Cornelius William
- Moffat, Douglas
- Moke, George Edward
- Molesworth, Bagot Francis
- Moline, Edgar Robert
- Molloy, Bernard Charles
- Molloy, James Lynam
- Moloney, Michael
- Molyneux, Edward Elcock
- Moncamp, Philippe Gaston Martin
- Monck, William Berkeley
- Monckton, Edward Philip
- Monckton, Horace Woollaston
- Monckton, John Lionel Alexander
- Moncreiff, Frederick Charles
- Money, Ernest Montagu
- Money, George Henry
- Money, William Bayley
- Monk, Charles James
- Monk Bretton, Baron
- Monkhouse, Joseph Robert
- Monnington, Walter
- Monro, Alexander
- Monro, Charles Henry
- Monro, Robert Webber
- Montague, Francis Charles
- Montefiore, John
- Montefiore, Joseph Gompertz
- Montgomerie, Frederick Butler Molineux
- Montgomery, Robert Mortimer
- De Montmorency, Mervyn Standish
- Montriou, William Austin
- Monypenny, Phillips Dunn
- Monypenny, Robert Phillips Dearden
- Moody, George
- Mookerjey, Bipin Behary
- Moon, Edward Robert Pacy
- Moon, Ernest Robert
- Moon, Robert
- Mooney, Harcourt
- Moore, Charles Edward
- Moore, Charles Paget
- Moore, Clement Henry Smiles
- Moore, Edward George (Augustus Harcourt)
- Moore, Edward Samuel Farrier
- Moore, George Osborne
- Moore, Henry William
- Moore, Hildebrand Ogle
- Moore, John Alldin
- Moore, John Byers Gunning
- Carrick-Moore, John
- Moore, John Wilson
- Moore, Robert Garret
- Moore, Samuel
- Moore, Sandford
- Moore, Stevenson Stewart
- Moore, Stuart Archibald
- Moore, Thomas (b.1857)
- Tunnard-Moore, Thomas Coney
- Moore, William Robert
- Moorhouse, William Sefton
- Moorsom, James Marshall
- Morasso, Alfred Cyril
- More, Robert Jasper
- Moreton, Thomas
- Morgan, Christopher Hird
- De Morgan, George
- Morgan, Rt. Hon. George Osborne
- Morgan, John Lloyd
- De Morgan, Joscelyn Augustus
- Morgan, Richard Hillebrand
- Morgan, Richard Owen Stewart
- Morgan, Sir Walter
- Moriarty, James
- Morice, Beaumont
- Morice, George Thomas
- Morland, William Courtenay
- Morley, Arnold
- Morley, John
- Morphett, Eustace
- Morrell, Charles Francis
- Morrell, George Herbert
- Morrice, Frederick Lancelot Hamilton
- Morrice, John Walter
- Morrieson, Edward Currie
- Morrin, David
- Morris, Charles James
- Morris, Edward
- Morris, Frederic Philipse
- Morris, Herbert Picton
- Morris, John Ignatius
- Morris, Lewis
- Morris, Maurice O'Conor
- Morris, Philip
- Morris, Reginald Burnet
- Morris, Reginald Edwin
- Morris, Robert
- Morris, William (b.1820)
- Morris, William (b.1825)
- Morrison, Alexander Fraser
- Morrison, Archibald
- Morrison, Francis Robert
- Morrison, George Ebenezer
- Morse, Herbert
- Morse, Thomas Freeman
- Anderson-Morshead, John Yonge
- Morshead, Walter
- Morten, Edward
- Mortimer, Alexander
- Morton, Philip
- Moseley, Tilson Humphrey
- Mosely, Benjamin Lewis
- Mosley, Tonman
- Moss, George Ernest
- Moss, Samuel
- Mosse, Benjamin Forbes
- Motabhoy, Navrosjee Rastomjee
- Mote, Frederick
- Mott, Albert
- Mott, Marcus William
- Motte, William Radley Standish
- Moullin, William Hilary Baliol
- Moulsdale, Robert Owen
- Moulton, John
- Moulton, John Fletcher
- Mounsey, Charles Herbert
- Mount, William George
- Mowat, Robert Anderson
- Mowatt, James
- Mowbray, Rt. Hon. Sir John Robert, Bart.
- Mowbray, Robert Gray Cornish
- Moxon, William
- Moyle, James Copley
- Moyle, John Baron
- Moyses, John Watson
- Mozley, Herbert Newman
- Mozley, William Elias
- Mudie, James
- Mugliston, Henry Boyes
- Muir, Julius Wood
- Muir, Richard David
- Muir, Robert Burleigh
- Muirhead, Francis Lauder
- Muirhead, Francis Montagu
- Muirhead, James
- Mukerji, Rishibar
- Mulcaster, John Peter
- Mulgan, James Mason
- Mulholland, William
- Mullick, Otool Churn
- Mulligan, James
- Mullins, Thomas
- Munby, Arthur Joseph
- Mundy, Charles Francis Miller
- Mundy, Cyril Percy
- Mundy, Francis Noel
- Munro, Joseph Edwin Crawford
- Courthope-Munroe, Henry
- Munster, Henry
- Munster, John Philip
- Muntz, Frederick Ernest
- Murch, Charles Jerom
- Mure, Reginald James
- Murison, Alexander Falconer
- Murphy, Francis Harvey
- Murphy, John Patrick
- Murray, Arthur Turnour
- Gostling-Murray, Charles Edward
- Grenville-Murray, Douglas Nugent Wyndham Eustace Clare
- Murray, Hon. Dudley Oliphant
- Murray, Fitzgerald Lockhart Ross
- Murray, George
- Murray, George Sholto Douglas
- Murray, Rev. John
- Murray, John Edwards
- Murray, John Rigby
- Murray, Robert Hay
- Murray, Thomas Douglas
- Murray, William
- Murray, William Powell
- Musgrave, George
- Musgrave, Henry Musgrave
- Musgrave, Henry Yorke
- Musgrave, William Anthony Byam
- Mushet, Robert Smith
- Myburgh, Alexander
- Myburgh, Philip Albert
- Myers, Ernest James
- Myers, William Henry
- Mylrea, John Allen
- Mynors, Robert
- Mytton, Robert Purrier
