David Brent Keuning (born March 28, 1976) is an American guitarist and songwriter, best known for his role as the lead guitarist of the rock band The Killers, which he founded alongside Brandon Flowers in 2001 and with whom he has recorded five studio albums. Keuning played every show with The Killers since its inception up until the show at Chicago's Lollapalooza on August 4, 2017. From 2017 to the end of 2020, Keuning was on hiatus from the band. He has since returned to The Killers to help record their new album. Keuning released a solo album titled Prismism under his surname Keuning in 2019.