Thomas Mann (1875–1955) was a German author, essayist, and Nobel Prize laureate.

Thomas Mann may also refer to:

• Thomas Mann (actor) (born 1991), American actor, Project X
• Thomas Mann (artist) (born 1947), American jewelry artist
• Thomas Mann (German politician) (born 1946), German politician (CDU) and Member of the European Parliament
• Thomas Mann (Iowa politician) (born 1949), American politician in the state of Iowa
• Thomas C. Mann (1912–1999), United States diplomat in Latin America
• Thomas E. Mann (born 1944), United States political scientist and author
• Thomas P. Mann (born 1965), Justice of the Supreme Court of Virginia
• Tom Mann (1856–1941), British trade unionist and socialist

• Thomann (retailer), a German-based retailer of musical instruments

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