Simon Townshend is a British musician and songwriter and is the younger brother of the Who's Pete Townshend.

Simon joined The Who as a second guitarist for their Quadrophenia tour in 1996 and 1997. He later rejoined the band as a full touring member in 2002, and has played with them on each of their tours since.

He also plays and writes music for his own band Casbah Club, which includes Bruce Foxton (The Jam, Stiff Little Fingers) and Mark Brzezicki (The Cult, Procol Harum).