A tenet is any opinion, principle, dogma or doctrine which a person or group believes or maintains, such as the tenets of Plato or of Cicero.

Tenet may also refer to:

• Tenet Healthcare, a hospital holding company
• Tenet (people), an ethnic group in Soudan
• George Tenet, Former CIA Director
• Tenet, a Canadian heavy metal band formed by two members of Strapping Young Lad