The Lone Wolf in London is a 1947 American mystery crime film directed by Leslie Goodwins and starring Gerald Mohr, Nancy Saunders and Eric Blore. The picture features the fictional Scotland Yard detective the Lone Wolf who travels to London, and solves the mystery of some missing jewels. It was the penultimate Lone Wolf film, followed by The Lone Wolf and His Lady in 1949, and the last for Mohr in the lead role.

Gerald Mohr was an American radio, film, and television character actor and frequent leading man, who appeared in more than 500 radio plays, 73 films, and over 100 television shows.