Thom Brennan (born May 31, 1957 in Lubbock, Texas) is an American electronic ambient musician, composer and synthesist. Active since the 1980s with his first album Mountains (1987), he belongs to the scene of Californian pioneers of electronic music. His style encloses the principal traits characterizing the evolution from Terry Riley's and Morton Subotnick's minimalism to the form of electronic new age suite. Thom Brennan's music is realized almost exclusively with synthesizers, with a rare use of samples and without any acoustic instrument.