Clarkin is a surname. Notable people with the surname include:
Andrew Clarkin (1891–1955), Irish politician Ian Clarkin (born 1995), American baseball player John Clarkin (1872–?), Scottish footballer John Paul Clarkin (born 1978), New Zealand polo player Lucy Gertrude Clarkin (1876–1947), Canadian poet Matthew Clarkin (born 1981), British-born New Zealand rugby union player Nina Clarkin, British polo player Paul Clarkin (1950–2004), New Zealand polo player Richard Clarkin, Canadian actor Tony Clarkin (1946–2024), British musician and record producer Tony Clarkin (actor) (born 1952), Irish actor