Keith Wallen (born February 24, 1980) is an American musician best known as the rhythm guitarist, backing vocalist and one of the songwriters for the rock band Breaking Benjamin. He is a former guitarist, backing vocalist and co-writer of Adelitas Way, and the co-founder, lead singer, guitarist and main songwriter for Knoxville, Tennessee-based band Copper. Since 2014, Wallen has also been maintaining a solo career.
