M
| Title | Date of creation | Surname | Current status | Notes |
|---|---|---|---|---|
| MacGregor of MacGregor | 1795 | MacGregor | extant | |
| Mackworth of The Gnoll | 16 September 1776 | Mackworth | extant | |
| Macpherson of Calcutta | 27 August 1786 | Macpherson | extinct 1822 | |
| Malet of Wilbury | 24 February 1791 | Malet | extant | |
| Mann of Linton Hall | 3 March 1755 | Mann | extinct 1814 | |
| Martin of Lockynge | 28 July 1791 | Martin | extinct 1910 | |
| Mawbey of Botleys | 30 July 1765 | Mawbey | extinct 1817 | |
| Mayne of Marston Mortaine | 22 April 1763 | Mayne | extinct 1794 | first Baronet created Baron Newhaven in 1776 |
| Mildmay of Moulsham | 5 February 1765 | Mildmay | extinct 1771 | |
| Miller of Glenlee | 3 March 1788 | Miller | extant | |
| Milman of Levaton-in-Woodland | 28 November 1800 | Milman | extant | |
| Milner of Nun-Appleton Hall | 26 February 1717 | Milner | extant | |
| Montgomery of Magbie Hill | 28 May 1774 | Montgomery | extinct 1831 | |
| Moore of Jamaica | 28 January 1764 | Moore | extinct 1780 | |
| Moore of the Navy | 4 March 1766 | Moore | extinct 1779 | |
| Gould, later Morgan of Tredegar | 15 November 1792 | Gould, Morgan | extinct 1962 | Viscount Tredegar |
| Morshead of Trenant Park | 22 January 1784 | Morshead | extinct 1905 | |
| Mosley of Rolleston | 18 June 1720 | Mosley | extinct 1779 | |
| Mosley of Ancoats | 1781 | Mosley | dormant | sixth Baronet died 1980 - see also the Baron Ravensdale |
Read more about this topic: List Of Baronetcies In The Baronetage Of Great Britain