Sir Edwin Henry Egerton, GCMG, KCB, PC (8 November 1841 – 8 July 1916) was a British diplomat who was envoy to Greece and ambassador to Spain and Italy.

Edwin Egerton was educated at Eton College, and joined the Diplomatic Service in 1859 as an attaché at St Petersburg.

He received the Knight Grand Cross of the Order of St Michael and St George (GCMG) in the 1902 Coronation Honours list published on 26 June 1902,[13][14] and was invested as such by King Edward VII at Buckingham Palace on 8 August 1902.

Thomas Egerton (1809–1847) and Charlotte Catherine (1812–1894), daughter of Sir William Milner, 4th Baronet.

He married in 1895 Olga, daughter of Prince Nicholas Lobanov-Rostovsky of Lobanovo, Russia, and widow of M. Michel Katkoff who had been Russian Secretary of Legation at Lisbon.