Dominic Lash (born 18 January 1980 in Cambridge, England) is a Bristol based double bassist and film theorist. He was formerly a central figure in the musicians' collective Oxford Improvisers. Important long-term musical collaborators include Angharad Davies, Bruno Guastalla, Alexander Hawkins, Tim Hill, Steve Noble, Samantha Rebello, Pat Thomas, Philipp Wachsmann and Alex Ward. He has also performed with saxophonists John Butcher and Evan Parker and violinist Tony Conrad. Recent work includes a UK tour with US guitarist Joe Morris, Australian drummer Tony Buck (of The Necks) and saxophonist Tony Bevan. Festival appearances have included the Manchester Jazz Festival (with the Grew Quartet), Akbank Jazz Festival (Istanbul) and Tampere Jazz Happening.
He is the only child of Nicholas Lash and Janet Lash, and hence first cousin to Ralph Fiennes, Joseph Fiennes and Sophie Fiennes.
As a film theorist he has written the book The Cinema of Disorientation: Inviting Confusions, published by Edinburgh University Press in 2020.