| Mandate of Heaven | A concept of legitimisation of East Asian Royals, associating their right to rule with divine sanction. Also see. Divine Right of Kings |
| Matriarch | A woman who is the head of a family or tribe. Also see. Patriarch |
| Mediatrix | A term for a female mediator; mediatress. |
| Minority Rule | A duration of time when the crown is passed to a minor who often requires a regent to support the mechanism of monarchy until they come of age to rule themselves. Also see. Absentee Authority, Co-rule, Queen Regent |
| Mistress | A woman who is having a sexual relation with a man who is married. Also see. Concubine, Odalik |