Egerton Grenville Bagot Phillimore (20 December 1856 – 5 June 1937) was a British scholar of Welsh literature and language.
Phillimore was born at 21 Chester Square, in Belgravia, London, on 20 December 1856 to John George Phillimore and Rosalind Margaret, née Knight-Bruce. He went to Windersham House school in Amesbury and then to Westminster School in London. He took his BA from Christ Church, Oxford in 1879 and an MA in 1883. He was admitted as a lawyer to the Middle Temple in 1877.
While at Oxford, Phillimore met John Rhys, Whitley Stokes and others who stimulated his interest in Welsh culture. He learned the language and collected Welsh books and manuscripts. From 1903 he lived at Corris in Snowdonia. He published an anthology of Welsh pornographic literature, Welsh Ædoeology, in Germany.