Charles Thomas Johnston (born August 15, 1948) is an American musician. He is a guitarist and vocalist, known principally as a founder, guitarist, lead vocalist and songwriter for the rock group The Doobie Brothers, as well as for his own solo career. He has played off and on with The Doobie Brothers for 50 years, in several styles. He was inducted into the Rock and Roll Hall of Fame as a member of The Doobie Brothers in 2020.