M
| Title | Date of creation | Surname | Current status | Notes |
|---|---|---|---|---|
| Macarty of Muskerry | c. 1638 | Macarty | forfeit 1691 | first Baronet succeeded as Viscount of Muskerry in 1640 |
| Macdonald of Sleat | 1625 | Macdonald, Bosville-Macdonald | extant | |
| Mackay of Strathnaver | 1627 | Mackay | extant | first Baronet created Lord Reay in 1628 |
| Mackenzie of Coul | 1673 | Mackenzie | dormant 1990 | |
| Mackenzie of Darien | 1703 | Mackenzie | dormant 1839 | |
| Mackenzie, later Inglis of Gairloch | 1703 | Mackenzie, Inglis | extant | |
| Mackenzie of Scatwell | 1703 | Mackenzie | dormant 1972 | |
| Mackenzie of Tarbart | 1628 | Mackenzie | forfeited 1763 | |
| Mackenzie of Royston | 1704 | Mackenzie | forfeited 1763 | |
| Maclean of Morvern | 1631 | Maclean | extant | |
| Maclellan of Bombie | c. 1631 | Maclellan | dormant 1831 | first Baronet created Lord Kirkcudbright in 1633 |
| Maculloch of Myrstoun | 1664 | Maculloch | extinct 1697 | |
| Maitland of Pitrichies | 1672 | Maitland | extinct or dormant c. 1704 | |
| Maitland of Ravelrig | 1680 | Maitland | extant | first Baronet succeeded as Earl of Lauderdale in 1695 |
| Makgill of Cranston Riddell | 1627 | Makgill | extant | |
| Malcolm of Balbedie and Innertiel | 1665 | Malcolm | extant | |
| Marshall | 1658 | Marshall | extinct 1816 | |
| Maxwell of Calderwood | 1627 | Maxwell | extant | Merged with Baron Farnham in 1885; Baronetcy unproven (14th Baronet died 2001) - under review |
| Maxwell of Pollock | 1630 | Maxwell | extinct or dormant 1647 | |
| Maxwell | 1663 | Maxwell | status unknown | |
| Maxwell of Monreith | 1681 | Maxwell | extant | |
| Maxwell, later Stirling-Maxwell, later Macdonald of Pollock | 1682 | Maxwell, Stirling-Maxwell, Macdonald | extant | |
| Menzies of Castle Menzies | 1665 | Menzies | extinct 1910 | |
| Meredith of Marston | 1639 | Meredith | dormant 1790 | |
| Milne of Marston | 1686 | Milne | extinct or dormant 1791 | |
| Moir of Longford | 1636 | Moir | extinct or dormant 1644 | |
| Moncreiff of Moncreiff | 1626 | Moncreiff | extant | Merged with Baron Moncreiff in 1883; Baronetcy unproven (15th Baronet died 2002) - under review |
| Moncreiffe, later Hay | 1685 | Moncreiffe, Hay | extant | |
| Montgomery of Skelmorly | 1628 | Montgomery | dormant 1735 | |
| Mowat of Inglestoun | 1664 | Mowat | status unknown | |
| Munro of Foulis Obsdale | 1634 | Munro | extant | Baronetcy unproven (15th Baronet died 1996); under review |
| Mure of Rowallen | 1662 | Mure | presumably extinct c. 1700 | |
| Murray of Cockpool | 1625 | Murray | dormant 1658 | second Baronet succeeded as Viscount Annand |
| Murray of Clermont | 1626 | Murray | dormant c. 1700 | |
| Murray of Blackbarony | 1628 | Murray | extant | |
| Murray, later Erskine-Murray of Elibank | 1628 | Murray, Erskine-Murray | extant | first Baronet created Lord Elibank in 1643 |
| Murray of Dunerne | 1630 | Murray | dormant 1958 | Baronetcy dormant (13th Baronet died 1958) |
| Murray of Stanhope | 1664 | Murray | forfeited 1746 | |
| Murray of Ochtertyre | 1673 | Murray | extant | |
| Murray, later Hepburn-Murray of Glendoick | 1676 | Murray, Hepburn-Murray | extinct c. 1774 | |
| Murray of Melgund | 1704 | Murray | dormant 1848 |
Read more about this topic: List Of Baronetcies In The Baronetage Of Nova Scotia