Sir George Power, 7th Baronet was an operatic tenor known for his performances in early Gilbert and Sullivan operas with the D'Oyly Carte Opera Company, most famously creating the roles in London of Ralph Rackstraw in H.M.S. Pinafore (1878) and Frederic in The Pirates of Penzance (1880).

H.M.S. Pinafore; or, The Lass That Loved a Sailor is a comic opera in two acts, with music by Arthur Sullivan and a libretto by W. S. Gilbert. It opened at the Opera Comique in London on 25 May 1878, and ran for 571 performances, which was the second-longest run of any musical theatre piece up to that time. H.M.S. Pinafore was Gilbert and Sullivan's fourth operatic collaboration and their first international sensation.