Sech may refer to:
Hyperbolic secant, usually abbreviated as sech
Sich or sech, an administrative and military centre for Cossacks
Sech, Sultanpur Lodhi, a village in Punjab, India
Sech (singer), Panamanian singer
Are you safe on the Internet?Surf anonymously, prevent hackers from acquiring your IP address, send anonymous email, and encrypt your Internet connection. High speed, ultra secure, and easy to use. Instant setup.