Iain Johnstone (born 8 April 1943 in Reading, Berkshire) is an English author and broadcaster. He attended Crosfields School, Reading, Campbell College, Belfast and Bristol University. Johnstone has published the books, Streep: A Life in Film a biography of Oscar-winning actress Meryl Streep, the authorised biography of Tom Cruise, biographies on Dustin Hoffman and Clint Eastwood and three novels including Pirates of the Mediterranean. His twelfth book, "Close Encounters – A Media Memoir" is published by Spellbinding Media. The book contains insights into movie stars and celebrities of the 20th Century where Johnstone tells of his time both on set and at home with screen luminaries Stanley Kubrick, Clint Eastwood and Barbra Streisand. He documents his return to Louisville with Muhammad Ali, his journey up the Nile with Peter Cook and Stephen Fry and his time spent with Dame Edna. He also reveals how he came to write a diary with Mel Gibson and spend time with Paul Newman and Robert Redford.