Irdeto is a company which sells conditional access systems for digital satellite and cable television. Irdeto is a division of Naspers, a South African company.

In common usage, the term Irdeto is most used to refer to the Irdeto encryption system used by satellite broadcasters such as South Africa’s DStv and Australia’s Austar.

The current revision of Irdeto is Irdeto 2.

Irdeto is marketed in two packages, M-Crypt and PIsys. M-Crypt is marketed to small and medium sized digital broadcasters, while PIsys is marketed to digital broadcasters with large users bases and/or large numbers of channels.