Tanaquil was the queen of Rome by marriage to Tarquinius Priscus, the fifth King of Rome.

Lucius Tarquinius Priscus, or Tarquin the Elder, was the legendary fifth king of Rome and first of its Etruscan dynasty. He reigned for thirty-eight years. Tarquinius expanded Roman power through military conquest and grand architectural constructions. His wife was the prophetess Tanaquil.