Brett Nelson (born 1969) is an American multi-instrumentalist, singer and songwriter best known as the former bassist for the indie rock band Built to Spill.

In high school, Nelson played in a band called Farm Days along with Doug Martsch and Andy Capps.

Nelson sings and plays guitar and keyboards for The Suffocation Keep, which released its debut album John Hughes Was Never So Wrong in 2002.

[5] The new edition of The Electronic Anthology Project takes nine songs from Dinosaur Jr. with new vocals by J Mascis.

[6] Brett Nelson departed from Built to Spill, along with then-drummer Scott Plouf in 2012, after 18 years with the band.