Tyco may refer to:

Tyco International, a diversified industrial conglomerate TE Connectivity, formerly Tyco Electronics, a former segment of Tyco International Tyco Solarlok, a type of electrical connector widely known as "the Tyco connector" Tyco Toys, a division of Mattel Tyco Federal Credit Union, a credit union for employees of Tyco International, TE Connectivity and Covidien Ty Inc., maker of Beanie Babies

See also Taiko (disambiguation) Tycho (disambiguation)