The monarchy of Lesotho is the form of government used by Lesotho (also known as Basutoland until 1966) by which a hereditary monarch reigns as the head of state, with their powers regulated by the Constitution.

The monarch is styled as Marena; in Sotho language, Marena is the plural of the common noun Kings, where Morena is the singular for King.

The monarch since 7 February 1996 is King Letsie III, who ascended the throne on the death of King Moshoeshoe II, his father.

It is the second reign of Letsie III; his first reign lasted from 12 November 1990 to 25 January 1995.

The succession to the throne of Lesotho is laid down in Chapter V of the Constitution, which reads that: The king is granted a privy purse amounting to 52,778 USD annually.