Carnahan may refer to:

• the Carnahan family from Missouri, including
  • Mel Carnahan (1934–2000), American lawyer and politician
• Herschel L. Carnahan (1879–1941), American politician
• James Carnahan (1775–1859), American clergyman and educator
• Jean Carnahan (1933–2024), American politician and writer
• Jennifer Carnahan (born 1976), American politician
• Joe Carnahan (born 1969), American film director, screenwriter, and producer
• J. P. Carnahan (1832–1912), American mathematician and politician
• Matthew Carnahan (born 1961), American producer, writer, and director
• Matthew Michael Carnahan, American screenwriter
• Norman F. Carnahan (born 1942), American chemical engineer
• Robert H. Carnahan (died 1913), American military officer
• Scott Carnahan (born 1953), American professional tennis player
• Suzanne Carnahan, birth name of Susan Peters (1921–1952), American actress
• Alex Carnahan (aka Lex), character from the TV series Containment
• Evelyn Carnahan, character from The Mummy film series

• Carnahan Courthouse, Missouri
• Carnahan High School of the Future, Missouri
• Carnahan House, Louisiana
• Carnahan House (Pine Bluff, Arkansas)
• Carnahan Run, Pennsylvania

This disambiguation page lists articles associated with the title Carnahan.
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