Ronald Douglas Montrose was an American musician and guitarist who founded and led the rock bands Montrose and Gamma. He also performed and did session work with a variety of musicians, including Van Morrison, Herbie Hancock, Beaver & Krause, Boz Scaggs, Edgar Winter, Gary Wright, The Beau Brummels, Dan Hartman, Tony Williams, The Neville Brothers, Marc Bonilla and Sammy Hagar.

Montrose was an American hard rock band formed in 1973 and named after guitarist and founder Ronnie Montrose. The band's original lineup featured lead vocalist and frontman Sammy Hagar, who later found greater success as a solo artist and as a member of Van Halen. Rounding out the original foursome were bassist Bill Church and drummer Denny Carmassi. The band experienced moderate success before disbanding in early 1977. The 1973 debut album Montrose eventually proved to be an international sleeper hit, selling in excess of one million copies and attaining platinum status in 1986.