Alexander Martin Clunes (born 28 November 1961) is an English actor, director and television presenter. He is best known for portraying Martin Ellingham in the ITV comedy-drama series Doc Martin, Gary Strang in Men Behaving Badly, and William Shawcross in William and Mary. Clunes has narrated a number of documentaries for ITV, the first of which was Islands of Britain in 2009. He has since presented a number of documentaries centred on animals. He has also voiced Kipper the Dog in the animated series Kipper.

Clunes was appointed an Officer of the Order of the British Empire (OBE) in the 2015 Birthday Honours for services to drama, charity, and the community in Dorset.