Duncan Fest was an annual prank calling event held from 2008 until 2011. It was founded by YouTube prankster Dizeestl and typically held in August. Inspired by Realm of Darkness's Arnold Fest, it was the second-oldest such event and encouraged the creation of new calls by Frank "Duncan" Garrett. The competition finally ended after the Garrett's death on July 3, 2011.
- Main article: Duncan Fest 2009
- Main article: Duncan Fest 2011
- Main article: Duncan Fest 2013