Francis Robert "Frank" Pryor (30 March 1862 – 4 December 1937) was an English playwright.
Pryor was the youngest son of Robert Pryor of High Elms, Hertfordshire and his wife Elizabeth Caroline née Wyrley-Birch.
He was educated at Eton and Trinity College, Cambridge.
He was the author, jointly with Lizzie Allen Harker, of the 1914 comedy play Marigold, which was turned into a 1938 film Marigold. It was also broadcast on 22 May 1943 as one of the first episodes of BBC Radio's long-running drama strand Saturday Night Theatre. Despite working on a number of plays however, Marigold was his only success.
He was also a director of Allsopp's Brewery, and an Underwriter at Lloyd's of London.
An obituary by Laurence Binyon was published in The Times. He never married.