Is Lee Child the pen name of the author of the Jack Reacher books?

Lee Child is the pen name of the author of the books featuring Jack Reacher, a former American military policeman. Lee Child's real name and the name given to him at birth is Jim Grant.

Grant, a crime fiction, mystery and thriller writer, was born on October 29, 1954 in Coventry, England. His pen name, Lee Child, is the only name under which all of his writings have been published, including the Jack Reacher novels. However, Grant has used three different names during his career history to avoid confusion with established personalities with the same name. Grant has won several awards and nominations, including the Anthony Award for Best First Novel for his first book "Killing Floor."