Semon

Semon may refer to:

• Larry Semon (1889–1928), American actor, director, producer, and screenwriter during the silent film era
• Mo Chuaroc moccu Neth Semon (fl. c. 600?), an Irish monk and scholar of the Early Middle Ages
• Richard Semon (1859–1918), German zoologist and evolutionary biologist
• Waldo Semon (1898–1999), renowned American inventor born in Demopolis, Alabama