- Macartney, Frances, ?1727 - 1789
- Macartney, George, Earl, 1737 - 1806
- Macaulay, 1800 - 1859
- Macbeth, Robert Walker, R.A., 1848 - 1910
- Macbeth-Raeburn, Henry, R.A., 1860 - 1947
- MacColl, Dugald Sutherland, 1859 - 1948
- MacDonald, Alexander, 1849 - 1921
- MacDonald, Archibald, 1st Bt., 1747 - 1826
- MacDonald, Flora, 1722 - 1790
- MacDonald, Ramsay, 1866 - 1937
- MacDowell, Patrick, R.A., 1799 - 1870
- Machin, Arnold, R.A., 1911 - 1999
- Macintosh, Charles, 1766 - 1843
- MacIntyre, Margaret, 1865 - 1943
- Mackennal, Bertram, R.A., 1863 - 1931
- Mackenzie, Henry, 1745 - 1831
- Mackintosh, James, 1765 - 1832
- Macklin, Thomas, 1703 - 1800
- Mackmurdo, Arthur Heygate, 1851 - 1942
- Maclagan, Edward Douglas, 1864 - 1952
- Maclagan, Eric Robert Dalrymple, 1879 - 1951
- Macleay, Alexander, 1767 - 1848
- Macleod, John Mackenzie, Lord, 1727 - 1789
- Maclise, Daniel, R.A., 1806 - 1870
- MacLoghlin, Edward Percy Plantagenet, 1858 - 1904
- MacLoghlin, Eliza Millard, 1863 - 1928
- Macmillan, 1873 - 1952
- Macmillan, Earl of Stockton, Harold, 1894 - 1986
- MacNab, Peter, 1830 - 1900
- Macpherson, John, Bt., 1744 - 1821
- Macready, William Charles, 1793 - 1873
- MacTaggart, William, R.A., 1903 - 1981
- MacWhirter, John, R.A., 1839 - 1911
- Maderna, Stefano, 1576 - 1636
- Madison, James, 1754 - 1836
- Madocks, William, 1773 - 1828
- Magrath, Edward, fl. 19th century
- Maguire, Thomas Herbert, 1821 - 1895
- Mahoney, Charles, R.A., 1903 - 1968
- Maitland, Ellinor J. S., fl. 1864
- Major, Thomas, A.R.A., 1720 - 1799
- Malchair, John, 1731 - 1812
- Malden, Henry, 1800 - 1876
- Malet, Edward Baldwin, 4th Bt., 1837 - 1908
- Malin, Elizabeth, 1713 - 1794
- Malin, John, 1769
- Malmesbury, James Harris, 1st Earl of, 1746 - 1820
- Malone, Edmond, 1741 - 1812
- Malton, James, 1766? - 1803
- Malton, Thomas, the younger, 1751 - 1804
- Malton, Thomas, the elder, 1726 - 1801
- Manchester, Elizabeth Montagu, Duchess of, 1741 - 1832
- Mann, Horatio, 1706 - 1814
- Manners, Catherine Mary, 1779 - 1829
- Manners, Lady Louisa, 1745 - 1840
- Manning, Edward Henry, Cardinal, 1808 - 1892
- Manning, William, 1763 - 1835
- Manno, Antonio, 1739 - 1831
- Mansfield, David William Murray, 3rd Earl of, 1777 - 1840
- Mansfield, Richard, 1857 - 1907
- Mansfield, William Murray, 1st Earl of, 1705 - 1793
- Mantegna, Andrea, ca. 1431 - 1506
- Manzuoli, Giovanni, ca. 1720 - 1782
- Mar, John Francis Goodeve Erskine, 29th Earl of, 1836 - 1930
- Marchant, Nathaniel, R.A., 1739 - 1816
- Marchi, Giuseppe, ca. 1721/22 - 1808
- Margaritone,, fl.1250-1290
- Maria II, Queen of Portugal,, 1819 - 1853
- Mariani, Cesare, 1826 - 1901
- Marie Caroline, Queen of Naples and Sicily,, 1752 - 1814
- Marie-Louise,, Empress, consort of Napoleon I, Emperor of France, 1791 - 1847
- Markham, William, 1719 - 1807
- Marks, Bernard Samuel, 1826 - 1913
- Marks, Henry Stacy, R.A., 1829 - 1898
- Marlborough, Caroline, Duchess of, 1743 - 1811
- Marlborough, George Spencer-Churchill, 5th Duke of, 1766 - 1840
- Marlborough, George Spencer-Churchill, 6th Duke of, 1793 - 1857
- Marlow, William, 1740 - 1813
- Marmont, Auguste, 1774 - 1852
- Marochetti, Baron Carlo, R.A., 1805 - 1867
- Marr, Timothy, 1787 - 1811
- Marsh, Edward, 1872 - 1953
- Marshall, John, 1818 - 1891
- Marshall, William Calder, R.A., 1813 - 1894
- Martin, Charles, 1810 - 1906
- Martin, Claude, 1735 - 1800
- Martin, David, 1737 - 1797
- Martin, Elias, A.R.A., 1739 - 1818
- Martin, George, 1764 - 1847
- Martin, John, 1791 - 1855
- Martin, John, 1789 - 1854
- Marvell, Andrew, 1621 - 1678
- Mary,, Queen, Consort of George V, King of Great Britain, 1867 - 1953
- Mary,, 1776 - 1857
- Mary, Princess Royal, 1897 - 1965
- Masaccio, 1401 - 1428
- Masefield, John Edward, 1878 - 1967
- Masham, Samuel Cunliffe Lister, 1st Baron, 1815 - 1906
- Maskell, William, ca. 1814 - 1890
- Maskelyne, Nevil, 1732 - 1811
- Mason, Arnold, R.A., 1885 - 1963
- Mason, George Heming, A.R.A., 1818 - 1872
- Mason, James, 1710 - ca. 1780
- Mason, William, 1725 - 1797
- Massena, André, 1758 - 1817
- Mathew, Elisha, 1746 - 1781
- Mathias, Gabriel, 1719 - 1804
- Mathias, Thomas James, 1753 - 1835
- Matilda Garrard
- Matsukata, Kojiro, 1865 - 1950
- Maucourt, Charles, 1728 - 1768
- Maufe, Edward, R.A., 1883 - 1974
- Maugham, William Somerset, 1874 - 1965
- Maw, John Hornby, 1800 - 1885
- Maximilian I, King of Bavaria,, 1756 - 1825
- Maynard, Anne Parsons, Viscountess, ca. 1735 - 1815
- Maynard, Charles Maynard, 2nd Viscount, 1752 - 1824
- Mayne, Henry George, 1782 - 1803
- Mazell, Peter, 1733 - 1808
- McAllister, Isabel Geraldine, 1870 - 1945
- McConnel, Henry, 1801 - 1871
- McCormick, William, 1878 - 1931
- McCubbin, Frederick, 1855 - 1917
- McLean, Thomas Nelson, 1845 - 1894
- McMahon, John, 1st Bt., 1754 - 1817
- McMillan, Buchanan, before 1773 - after 1834
- McMillan, William, R.A., 1887 - 1977
- McMorran, Donald, R.A., 1904 - 1965
- Meade, Lady Selina, 1872
- Meares, John, 1756? - 1809
- Meath, William Brabazon, 11th Earl of, 1803 - 1887
- Meheux, John, 1749? - 1839
- Melbourne, Elizabeth Lamb, Viscountess, 1770 - 1805
- Melbourne, Peniston Lamb, 1st Viscount, 1745 - 1828
- Melbourne, William Lamb, 2nd Viscount, 1779 - 1848
- Melville, Henry Dundas, 1st Viscount, 1742 - 1811
- Melville, Norman L., 1839 - 1913
- Melville, Robert Saunders Dundas, 2nd Viscount, 1771 - 1851
- Mendelssohn, Felix Bartholdy, 1809 - 1847
- Mengs, Anton Raphael, 1728 - 1779
- Menpes, Mortimer, 1860 - 1938
- Meo, Gaetano, 1849 - 1925
- Meredith, George, 1828 - 1909
- Meredith, George, 1762 - 1831
- Merrifield, Mary Philadelphia, 1804 - 1889
- Merritt, Anna Massey Lea, 1844 - 1930
- Merritt, Henry, 1822 - 1877
- Merveldt, Max von Merveldt, Comte de, 1764 - 1815
- Mervyn, Sonia, 1937 - 1977
- Metcalfe, Thomas
- Methuen, Lord, R.A., 1886 - 1974
- Metternich, Clemens Lothar Wenzel, Prince, 1773 - 1859
- Metternich, Princess Clementine, 1804 - 1820
- Metz, Conrad Martin, 1749 - 1827
- Mexborough, John Savile, 3rd Earl of, 1783 - 1860
- Meyer, Jeremiah, R.A., 1735 - 1789
- Meyer, Mary
- Meyerstein, E.H.W., 1889 - 1952
- Meyrick, Frederick James, 1871 - 1945
- Michel, Jean-Baptiste, 1738 - 1804
- Michelangelo Buonarroti, 1475 - 1564
- Micklem, Charles, 1882 - 1955
- Middleditch, Edward, R.A., 1923 - 1987
- Middlesex, Lionel Cranfield, 1st Earl of, 1575 - 1645
- Middleton, Charles, 1756 -
- Middleton, Henry Willoughby, 6th Baron, 1761 - 1835
- Midleton, George Brodrick, 3rd Viscount, 1730 - 1765
- Mignaty, Margaret Albana, 1821 - 1887
- Mildert, William van, 1765 - 1836
- Miles, Jane Mary, ca. 1762 - 1846
- Millais, John Everett, Bt., P.R.A., 1829 - 1896
- Millais, Lady Euphemia, 1828 - 1897
- Miller, James, fl. 1773 - 1791
- Miller, John Douglas, fl. 18691903
- Miller, Thomas, 1811 - 1865
- Millet, F.D., 1846 - 1912
- Mills, J., fl. ca. 1797 - 1808?
- Milman, Henry Hart, Dean of St. Paul's, 1791 - 1868
- Milner, Diana, Lady, 1761 - 1805
- Milnes, Thomas, 1813 - 1888
- Milton, Mary, Viscountess, 1787 - 1830
- Minto, Gilbert Kynynmound, 1st Earl of, 1751 - 1814
- Minto, Gilbert Kynynmound, 2nd Earl of, 1782 - 1859
- Minton, John, 1917 - 1957
- Mishcon, Victor Mishcon, Baron, 1915 - 2006
- Miss C. M. Beresford, fl. 1863-65
- Mitan, Samuel, 1786 - 1843
- Mitchell, Charles William, 1855 - 1903
- Mitford, Mary Russell, 1787 - 1855
- Mitford, William, 1744 - 1827
- Moberly, Bishop of Salisbury, George, 1803 - 1885
- Mocatta, David Alfred, 1806 - 1882
- Molesworth, William, 1810 - 1855
- Momper, Joost de, 1564 - 1635
- Monckton of Brenchley, Walter Turner Monckton, 1st Viscount, 1891 - 1916
- Moncure D. Conway, 1832 - 1907
- Monet, Claude, 1840 - 1926
- Monk, James Henry, 1784 - 1856
- Monkhouse, William Cosmo, 1840 - 1901
- Monnington, Thomas, P.R.A., 1902 - 1976
- Monroe, James, 1758 - 1831
- Montagu, George Brudenell Montagu, Duke of, 1712 - 1790
- Montagu, Henry Scott, 1st Baron, 1832 - 1905
- Montagu, Montagu, R.N., 1786 - 1863
- Montefiore, Moses, 1784 - 1885
- Montford, Paul Raphael, 1868 - 1938
- Montgomery, Barbara, ca. 1757 - 1819
- Montgomery, Elizabeth, 1751 - 1783
- Montgomery, William, 1850 - 1927
- Montrose, Caroline Maria Graham, Duchess of, 1770 - 1847
- Montrose, James Graham, 3rd Duke of, 1755 - 1836
- Moon, Francis Graham, 1st baronet, 1796 - 1871
- Moore, Albert, 1841 - 1893
- Moore, Francis, 1767 - 1854
- Moore, Graham, 1764 - 1843
- Moore, Henry, 1898 - 1986
- Moore, Henry, R.A., 1831 - 1895
- Moore, James, 1762 - 1860
- Moore, John, 1761 - 1809
- Moore, John, 1729 - 1802
- Moore, John Collingham, 1829 - 1880
- Moore, Thomas, 1779 - 1852
- More, Jacob, 1740 - 1973
- More, Thomas, saint, 1478 - 1535
- Morel, Edmund Dene, 1873 - 1924
- Morgan, Frederick, 1856 - 1927
- Morgan, George Catchmaid, 1701 - 1823
- Morgan, Sydney Morgan, Lady, ca. 1783 - 1859
- Morier, David, 1701 - 1770
- Morland, George C., 1763 - 1804
- Morland, Henry Robert, 1716 - 1797
- Morley of Blackburn, 1838 - 1923
- Morley, Charles, 1853 - 1916
- Morley, Harry, A.R.A., 1881 - 1943
- Morley, John Parker, 1st Earl of, 1772 - 1840
- Mornington, Katherine Elizabeth Wellesley-Pole, Countess, 1760 - 1851
- Mornington, William Wellesley-Pole, 3rd Earl, 1763 - 1845
- Morris, Philip Richard, A.R.A., 1833 - 1902
- Morris, William, 1834 - 1896
- Morse, Samuel F.B., 1791 - 1872
- Morshead, Owen, 1893 - 1977
- Mortimer, John Hamilton, A.R.A., 17? September 1740 - 1779
- Morton, Andrew, 1802 - 1845
- Morton, George Douglas, 16th Earl of, 1761 - 1827
- Moser, George Michael, R.A., 1706 - 1783
- Moser, Mary, R.A., 1744 - 1819
- Mostyn, Tom, 1864 - 1930
- Motte, William de la, 1775 - 1863
- Mounbatten of Burma, Louis Mountbatten, 1st Earl, 1900 - 1979
- Mount, Richard Edgcumbe, 2nd Earl of, 1764 - 1839
- Mount-Temple, William Francis Cowper-Temple, Baron, 1811 - 1888
- Mountrath, Diana, Countess of, 1766 - 1766
- Mowbray, John, 1st Bt., 1815 - 1899
- Moynihan, Rodrigo, R.A., 1910 - 1990
- Mozley, Edith Margaret, 1847 - 1909
- Mozley, Fanny, fl. 1864
- Mrs John Musters, 1819
- Muirhead, David, A.R.A., 1867 - 1930
- Mulgrave, Constantine John Phipps, Baron, 1744 - 1792
- Mulgrave, Henry Phipps, 1st Earl of, 1755 - 1831
- Mulgrave, Maria, Countess of, 1798 - 1882
- Müller, William James, 1812 - 1845
- Mulready, William, 1805 - 1878
- Mulready, William, R.A., 1786 - 1863
- Mulvany, George Francis, 1809 - 1869
- Mulvany, Thomas James, 1779 - 1845
- Munnings,
- Munnings, Alfred, P.R.A., 1878 - 1959
- Munnings, Florence Carter, 1888 - 1914
- Munnings, William
- Munro, Alexander, 1825 - 1871
- Munster, Ernst Frederich, Count, 1766 - 1839
- Murat, Madame Caroline, 1782 - 1839
- Murillo, Bartolomé Estebán, 1617 - 1682
- Murphy, John, fl. 1778ca. 1817
- Murray, Charles Fairfax, 1849 - 1919
- Murray, David, R.A., 1849 - 1933
- Murray, George, 1876 - ?
- Murray, George, 1772 - 1846
- Murray, James, 1694 - after 1769
- Murray, John, 1851 - 1928
- Murray, John, 1808 - 1892
- Murray, John, 1778 - 1843
- Murray, Louisa, 1822 - 1891
- Muybridge, Eadweard, 1830 - 1904
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