The original Wolf Man, assuming you are referring to the old movie monster, was Lon Chaney Jr. in the 1941 film titled "The Wolf Man". At that point in his career, Jr. was billing himself simply as Lon Chaney, partly because his father had already died.
Now, the makeup Chaney wore in "The Wolf Man" had in fact been created for an earlier box office flop called "Werewolf of London", starring Henry Hull as the "wolf man". This one has some plot similarities to the later movie, but nothing from it ever became as iconic as Lon Chaney's portrayal of the wolf. In fact, Chaney appeared as Larry Talbot/The Wolf Man in four other films: "Frankenstein Meets the Wolf Man" (1943), "House of Frankenstein" (1944), "House of Dracula" (1945), and last but not least, "Abbott and Costello Meet Frankenstein" (1948).