Terry Alan Kath (January 31, 1946 – January 23, 1978) was an American musician and songwriter, best known as the original guitarist, co-lead singer and founding member of the rock band Chicago. He has been praised by the band for his guitar skills and Ray Charles-influenced vocal style.
Growing up in a musical family, Kath took up a variety of instruments in his teens, including the drums and banjo. He played bass in a number of bands in the mid-1960s, before settling on the guitar when forming the group that would become Chicago. His guitar playing was an important component of the group's sound from the start of their career, and he sang lead on several of the group's singles. He used a number of different guitars, but eventually became identified with the Fender Telecaster fitted with a humbucker pickup and decorated with numerous stickers.
Kath struggled with health issues and drug abuse toward the end of the 1970s. He died in January 1978 from an accidentally self-inflicted gunshot wound. The bereavement triggered Chicago to consider disbanding, but they ultimately decided to resume as is signified by their memorial song "Alive Again". To commemorate his musicianship, they later issued the 1997 album, The Innovative Guitar of Terry Kath.