The Viyyur High Security Prison is a high tech, high-security prison situated in Viyyur, Thrissur city, Kerala, India.

Half of the prison will be located underground to resist aerial attack.

[1][2][3] Kerala Chief Minister Oommen Chandy laid the foundation stone for the first high security prison on 17 June 2011 at Viyyur, Thrissur City.

The prison will have two compound walls, six-layered security scanning for visitors and CCTV in every cell, double-layer peripheral wall, five watch towers, a hi-tech video conference hall for trials, two hydraulic gates, single cells for solitary confinements and a hospital with mini-operation facility.

A 250 sq ft lawn would be developed surrounding the prison wall to avoid hand grenade attacks and personnel with a technical background would be deployed at the new facility.