Seneca may refer to:

Roman figures (any links to Seneca in Roman pages should be relinked to one of these two)

• Marcus (or Lucius) Annaeus Seneca also called 'rhetor', Roman orator and father of Seneca the philosopher and dramatist.
• Lucius Annaeus Seneca, also called 'the younger', 'philosophus' or 'tragicus', son of Seneca the Elder, Roman philosopher and playwright, ordered to commit suicide by Nero

Other

• Seneca tribe
• Seneca crater on the moon
• Seneca College, Toronto, Ontario
• USS Seneca, U.S. Navy ships
• Seneca Foods, maker of apple chips.
• Seneca (programming language) numerical computing programming language based on Oberon
• Piper PA-34 Seneca light twin-engine aircraft

Places in the United States of America:

• Seneca, Illinois
• Seneca, Kansas
• Seneca, New York
• Seneca, Pennsylvania
• Seneca, South Carolina
• Seneca, South Dakota
• Seneca, Wisconsin
• Seneca Army Depot in Seneca County, New York
• Seneca County, New York
• Seneca Falls (village), New York
• Seneca Lake
• Seneca Rocks
• Senecaville, Ohio
• West Seneca, New York

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