Doc Long may refer to:

• William Henry Long (1867-1947), American mycologist and forest pathologist
• George S. Long (1883–1958), U.S. Congressman (1953–1958) and member of the Long political dynasty from Louisiana
• Clarence Long (1908–1994), U.S. Congressman (1963–1985) from Maryland

This disambiguation page lists articles about people with the same name.
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