Robert Hall "Bob" Weir (WEER; born October 16, 1947) is an American singer, songwriter, and guitarist, most recognized as a founding member of the Grateful Dead. After the Grateful Dead disbanded in 1995, Weir performed with The Other Ones, later known as The Dead, together with other former members of the Grateful Dead. Weir also founded and played in several other bands during and after his career with the Grateful Dead, including Kingfish, the Bob Weir Band, Bobby and the Midnites, Scaring the Children, RatDog and Furthur, co-led by former Grateful Dead bassist Phil Lesh., In 2015, Weir, along with former Grateful Dead members Mickey Hart and Bill Kreutzmann, joined with Grammy-winning singer/guitarist John Mayer to form the band Dead & Company. Weir continued to tour with Dead & Company in 2016.
During his career with the Grateful Dead, Weir played mostly rhythm guitar and sang many of the band's rock-n-roll tunes. As a guitarist, he is known for his unique style of complex voiceleading and for bringing unusual depth and a new approach to the role of rhythm guitar expression.