Member of the House of Keys, or MHK is the title given to a person who has been elected into the House of Keys, the lower house of Tynwald, the parliament of the Isle of Man.

The House of Keys is situated in Douglas, the capital of the Isle of Man.

The Old House of Keys, their former chamber, is located in Castletown, the former capital. It is now a museum.

The are twenty-four Members of the House of Keys. Elections are held every five years, the last election took place in November 2006.

The leader of the House is the Speaker of the House of Keys, currently The Hon Stephen Charles Rodan SHK