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)