TEAC may refer to:

• TEAC Corporation, a Japanese electronics company
• TEAC Oval, a sports stadium in Port Melbourne, Australia
• Tetraethylammonium chloride, a chemical compound
• Trolox equivalent antioxidant capacity, a measure of antioxidant capacity
• Transfer Emergency Action Contact, a procedure created by ICANN to deal with domain-related disputes

TEAC Corporation (pronounced "Tee-ack") is an electronics company based in Japan. TEAC was founded in 1953 as the Tokyo Electro Acoustic Company.