Atticus Matthew Cowper Ross (born 16 January 1968) is an English musician, composer, record producer, and audio engineer. He is best known for his work with American musician Trent Reznor, with whom he first worked on the musical project Tapeworm in 2002. He began working with Reznor's band Nine Inch Nails in 2005 as a programmer and producer, then joined as a musician and became the only official member of the band other than Reznor in 2016.
