James Mann
James Mann is the name of:
- James Mann, 5th Earl Cornwallis (1778–1852), British peer
- James Mann (politician) (1822–1868), American legislator from Maine and U.S. Representative for Louisiana
- James Robert Mann (Illinois) (1856–1922), American legislator and U.S. Representative from Illinois
- James Mann (curator) (1897–1962), British collector, surveyor and historian of art
- James Robert Mann (South Carolina) (1920–2010), American soldier, lawyer and U.S. Representative from South Carolina
- James Mann (writer) (born 1946), American writer
- James Mann (engineer) (born 1961), Canadian engineer