Mac Ruth (born May 7, 1967 in Ellensburg, Washington, USA) is an American sound mixer. He has worked on numerous films, including Underworld (2003), The Cave (2005), Eragon (2006), Hansel & Gretel: Witch Hunters (2013). Hercules (2014), The Martian (2015), Spy (2015), among others.He was nominated at the 88th Academy Awards in the category of Best Sound Mixing for The Martian. His nomination was shared with Paul Massey and Mark Taylor.He was also nominated at the 89th Academy Awards and the 90th Academy Awards for his work on 13 Hours: The Secret Soldiers of Benghazi and Blade Runner 2049, respectively.