The Brian Pern mockumentaries are a British comedy spoof-documentary series about a fictional ageing rock star, Brian Pern, the former frontman of the 1970s progressive rock group Thotch. The series is written by Rhys Thomas and Simon Day, and stars Day as Pern, with Michael Kitchen, Paul Whitehouse and Nigel Havers in supporting roles.

Brian Pern, described by Radio Times as "an affectionate parody of Peter Gabriel, with a dash of Brian Eno", originated as a character for a web series. Subsequently transferred to television, the first series, titled The Life of Rock with Brian Pern, was originally broadcast in three weekly parts on BBC Four from 10 February 2014. A second series of three episodes was promoted to BBC Two and broadcast from 9 December 2014, retitled Brian Pern: A Life in Rock. A third series of three episodes, Brian Pern: 45 Years of Prog and Roll, was broadcast on BBC Four from 14 January 2016. A spoof Christmas song ‘Wish I Was At Home With My Missus' was based on the WW1 Christmas Truce.