James Clemens may refer to: James Clemens (lord mayor), English merchant and shipowner, Lord Mayor of Liverpool, 1775–76 James Clemens, pen name of author James Paul Czajkowski (born 1961), who also uses the pen name James Rollins James Clemens Jr. (1791–1878), American businessman James Brackenridge Clemens (1825–1867), American entomologist James T. Clemens (born 1943), American theoretical physicist
See also James and Sophia Clemens Farmstead, a farm in Darke County, Ohio James Clemens High School, a high school in Madison, Alabama