Steven Isserlis (born 19 December 1958) is a British cellist. An acclaimed soloist, chamber musician, educator, writer and broadcaster, he is widely regarded as one of the leading musicians of his generation. He is also noted for his diverse repertoire and distinctive sound which is deployed with his use of gut strings.

Isserlis is the recipient of numerous awards including the Royal Philharmonic Society Music Award in 1993, the Robert Schumann Prize of the City of Zwickau in 2000, and both the Wigmore Hall Medal and Glashütte Original Music Festival Award in 2017. His recordings have garnered two Gramophone Awards, a Classical BRIT Award, a BBC Music Magazine Award, and two Grammy Award nominations among others. He is also one of the only two living cellists inducted into the Gramophone Hall of Fame.

Isserlis currently plays on the 1726 Marquis de Corberon cello made by Antonio Stradivari on loan from the Royal Academy of Music.