William Lathrop

William Lathrop may refer to:


 * William Lathrop (politician) (1825–1907), U.S. Representative from Illinois.
 * William Langson Lathrop (1859–1938), American landscape painter
 * William Addison Lathrop, American author, playwright, and screenwriter
 * Bill Lathrop (1891–1958), American baseball pitcher