Geoffrey McGivern (born 1952) is an English actor in film, radio, stage and television. He was born in Balham, South London and grew up in York. There he attended Archbishop Holgate's School, where he was made Head Boy. He studied at Christ's College, Cambridge, where he was involved in the renowned Footlights society and the Marlowe Society. He is well remembered for playing Ford Prefect in the radio series (1978–80) and subsequent LP releases of The Hitchhiker's Guide to the Galaxy by Douglas Adams, whose role he reprised for the three new series broadcast on BBC Radio 4 between 2004 and 2005.
For the 1998 radio SciFi drama Paradise Lost in Cyberspace (Colin Swash, BBC) McGivern teamed up with old Hitchhiker's colleague Stephen Moore and Lorelei King (member of cast in the 2005 Hitchhiker's radio show sequel).