Sam Dunn (born 20 March 1974) is a Canadian documentary filmmaker, musician, and anthropologist, best known for his series of documentaries on heavy metal music. He co-owns Toronto-based production company Banger Films with Scot McFadyen. Dunn holds a bachelor's degree in anthropology from the University of Victoria and a master's degree from York University where his thesis work focused on Guatemalan refugees.

Dunn's first documentary film, Metal: A Headbanger's Journey, won a Gemini Award for Best Writing in a Documentary. His additional credits include the Grammy-nominated Rush: Beyond the Lighted Stage and Super Duper Alice Cooper, winner of Best Feature-Length Documentary at the Canadian Screen Awards. Dunn co-directed and hosted the biggest-ever TV series on the history of heavy metal, Metal Evolution, which reached #1 on VH1 Classic (USA) and M3 (Canada), and most-recently co-directed the Netflix original series Hip-Hop Evolution which has been awarded a Peabody, an International Emmy, and a Canadian Screen Award.

Dunn's first film, co-directed with Scot McFadyen and Jessica Wise, was released in 2005. The film follows Dunn on a journey to document the origins, culture and appeal of heavy metal. It also explores themes of heavy metal, such as violence, death, religion and Satanism, gender and sexuality. The documentary featured interviews with Geddy Lee of Rush and Bruce Dickinson of Iron Maiden, whose bands Dunn would profile in later documentaries.

Released in 2008, Sam directed a new film, titled Global Metal. In the film, directors Scot McFadyen and Sam Dunn set out to discover how the West’s most awesome musical genre – heavy metal – has impacted the world’s cultures beyond Europe and North America. The film follows metal fan and anthropologist Dunn on a whirlwind journey through Asia, South America and the Middle East as he explores the underbelly of the world’s emerging extreme music scenes — from Indonesian death metal to Israeli Oriental metal and Chinese black metal to Iranian thrash metal, etc. The film reveals a worldwide community of metalheads who are not just absorbing metal from the West – they are transforming it, and creating a new form of cultural expression in societies dominated by conflict, corruption and mass-consumerism.

Dunn co-wrote and co-directed the 2009 documentary Iron Maiden: Flight 666 with Scot McFadyen. The film chronicles the band's 2008 tour in which a converted Boeing 757 was flown from country to country by Iron Maiden vocalist Bruce Dickinson.

In 2009 Sam Dunn and Scot McFadyen started working on a documentary about Rush. The film premiered at the 2010 Tribeca Film Festival in New York on April 29, winning the festival's Audience Award.

Dunn has produced the documentary series Metal Evolution for VH1 Classic on various metal genres. Its premiere was on November 11, 2011, considered by many to be National Metal Day.

Is a concert DVD, Blu-ray and double CD by Canadian hard rock band Rush released on November 8, 2011. It was filmed on April 15, 2011 at the Quicken Loans Arena in Cleveland, Ohio during the band's Time Machine Tour.