Christopher Haden-Guest, 5th Baron Haden-Guest (born 5 February 1948),[1] known professionally as Christopher Guest, is a British-American actor, comedian, screenwriter and director. Guest has written, directed, and starred in his series of comedy films shot in mockumentary style. The series of films began with This Is Spinal Tap (which he did not direct) and continued with Waiting for Guffman, Best in Show, A Mighty Wind, For Your Consideration, and Mascots.

Guest holds a hereditary British peerage as the 5th Baron Haden-Guest, and has publicly expressed a desire to see the House of Lords reformed as a democratically elected chamber.[2] Though he was initially active in the Lords, his career there was cut short by the House of Lords Act 1999, which removed the right of most hereditary peers to a seat in the parliament. When using his title, he is normally styled as Lord Haden-Guest. Guest is married to the actress Jamie Lee Curtis.