Morganatic marriage, sometimes called a left-handed marriage,[1] is a marriage between people of unequal social rank, which in the context of royalty prevents the husband's (or wife's) titles and privileges being passed on to the wife (or husband) and/or any children born of the marriage.

Generally, this is a marriage between a man of high birth (such as from a reigning, deposed or mediatised dynasty) and a woman of lesser status (such as a daughter of a low-ranked noble family or a commoner).[2][3] Usually, neither the bride nor any children of the marriage have a claim on the bridegroom's succession rights, titles, precedence, or entailed property. The children are considered legitimate for all other purposes and the prohibition against bigamy applies.[3][4] In some countries, a woman could also marry a man of lower rank morganatically. As a result of the above, a king deciding to enter into a morganatic marriage who does not have children from a previous marriage thereby gives up the chance of being succeeded by his own children and accepts that succession would pass to his other relatives.