Bill Wells (born c. 1963) is a Scottish bassist, pianist, guitarist and composer.

He is best known for his group the Bill Wells Octet, since the early 1990s, but he has performed and recorded in a wide range of settings, including collaborations with The Pastels, Maher Shalal Hash Baz, Future Pilot A.K.A., Lol Coxhill, Isobel Campbell, Barbara Morgenstern and recently Aidan Moffat. He has also played on tracks by Kevin Ayers, V Twin and Duglas T. Stewart.