| Dr Ma Chengyuan FBA | Year of birth 1927 | Year of death 2004 | Year elected 1993 | Fellowship category Corresponding |
| Dr Paul Maas FBA | Year of birth 1880 | Year of death 1964 | Year elected 1941 | Fellowship category Corresponding |
| Dr Carlile Macartney FBA | Year of birth 1895 | Year of death 1978 | Year elected 1965 | Fellowship category UK |
| Sir Neil MacCormick QC, FBA, FRSE | Year of birth 1941 | Year of death 2009 | Year elected 1986 | Fellowship category UK |
| Professor Oliver MacDonagh FBA | Year of birth 1924 | Year of death 2002 | Year elected 1984 | Fellowship category Corresponding |
| Sir George Macdonald KCB, FBA | Year of birth 1862 | Year of death 1940 | Year elected 1913 | Fellowship category UK |
| Professor Arthur Anthony Macdonell FBA | Year of birth 1854 | Year of death 1930 | Year elected 1906 | Fellowship category UK |
| Sir John Macdonell KCB, FBA | Year of birth 1845 | Year of death 1921 | Year elected 1913 | Fellowship category UK |
| Sir Donald MacDougall CBE, FBA | Year of birth 1912 | Year of death 2004 | Year elected 1966 | Fellowship category UK |
| Professor Douglas MacDowell FBA, FRSE | Year of birth 1931 | Year of death 2010 | Year elected 1993 | Fellowship category UK |
| Professor Robert Morrison MacIver FBA | Year of birth 1882 | Year of death 1970 | Year elected 1964 | Fellowship category Corresponding |
| Professor Maynard Mack FBA | Year of birth 1909 | Year of death 2001 | Year elected 1973 | Fellowship category Corresponding |
| Mr Denis Mack Smith CBE, FBA | Year of birth 1920 | Year of death 2017 | Year elected 1976 | Fellowship category UK |
| Dr John William Mackail OM, FBA | Year of birth 1859 | Year of death 1945 | Year elected 1914 | Fellowship category UK |
| Professor Angus MacKay FBA | Year of birth 1939 | Year of death 2016 | Year elected 1991 | Fellowship category UK |
| Professor John Stuart Mackenzie FBA | Year of birth 1860 | Year of death 1935 | Year elected 1934 | Fellowship category UK |