Peter Lindsay Weir is an Australian retired film director. He is known for directing films crossing various genres over forty years with films such as Picnic at Hanging Rock (1975), Gallipoli (1981), The Year of Living Dangerously (1982), Witness (1985), Dead Poets Society (1989), Fearless (1993), The Truman Show (1998), Master and Commander: The Far Side of the World (2003), and The Way Back (2010). He has received six Academy Award nominations, ultimately being awarded the Academy Honorary Award in 2022 for his lifetime achievement career.

Picnic at Hanging Rock is a 1975 Australian mystery film directed by Peter Weir and based on the 1967 novel Picnic at Hanging Rock by Joan Lindsay. Cliff Green adapted the novel into a screenplay. The film stars Rachel Roberts, Dominic Guard, Helen Morse, Vivean Gray and Jacki Weaver. The plot involves the disappearance of several schoolgirls and their teacher during a picnic at Hanging Rock, Victoria on Valentine's Day in 1900, and the subsequent effect on the local community.