Samuel J. Coomes (born April 23, 1964) is an American musician, and one-half of the Portland-area indie band Quasi, along with his ex-wife, drummer Janet Weiss. Coomes was also a member of the mid-1980s underground pop band The Donner Party and replaced Brandt Peterson as the bassist for the 1990s Portland indie rock band, Heatmiser, playing on their final studio album, Mic City Sons.