Bill Wells (born Falkirk) 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 and recently Isobel Campbell. He has also played on tracks by Kevin Ayers, V Twin and Duglas T. Stewart.

During 2006 he received a Scottish Arts Council 'Tune Up' commission for a tour of Scotland with a group of Japanese musicians. In 2007 Wells formed, the semi-ironically titled, The National Jazz Trio of Scotland.