Sir Francis Graham-Smith FRS (born 25 April 1923) is a British astronomer.

In 1964 he was appointed Professor of Radio Astronomy the University of Manchester and in 1981 director of the Nuffield Radio Astronomy Laboratories, part of the University of Manchester at Jodrell Bank.

He appeared in Episode 13 of Series 4 of Treasure Hunt when the show visited Jodrell Bank, giving presenter Anneka Rice a piggy back to allow her to reach a clue.

[8] He lived with his wife Elizabeth in the Old School House in Henbury, Cheshire, from 1981 until her death in 2021.

They had met when they were both working with Martin Ryle in 1945-6 in Cambridge in the early days of radio astronomy.