James Clemens

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