Jon Opstad (born 1983) is a British composer. His work spans music for film and television, contemporary dance, concert music and album projects. He has collaborated with other artists, such as Max Richter. Opstad is classically trained, having studied music at Cambridge University, before graduating with an MA in film composition from the National Film and Television School.

In television, Opstad is best known for his scores for dark dramas such as Netflix's Bodies and Black Mirror. His score with Max Richter for Elisabeth Moss thriller The Veil was acclaimed by IndieWire as one of "The Best TV Scores of 2024".

Opstad's 2014 contemporary dance score Ignis was nominated for a British Composer Award (since rebranded as Ivors Classical Awards) for "Best Stage Work". Tracks from Ignis have been used extensively in other productions, with the composition "Ignis IV" featuring in the trailer for Hollywood feature film Ad Astra, a trailer for Amazon Prime series The Lord of the Rings: Rings of Power, and the drama series The Veil. The track "Ignis I" was featured in the opening episode of Paramount drama series The Man Who Fell To Earth.

In 2021, Opstad was featured as an answer to a question on the long-running British TV game show Mastermind, as part of a specialist round on Black Mirror. Opstad has been quoted on his approach to scoring the Black Mirror episodes White Bear and White Christmas in the official book on the series written by Charlie Brooker, Annabel Jones and Jason Arnopp, "Inside Black Mirror"

In 2015 the WNYC radio show New Sounds, presented by John Schaefer, focussed an episode on Opstad's music. Opstad's music has also featured on BBC Radio 3 programmes Late Junction, In Tune and Unclassified amongst others.