Tchirozerine is a department of the Agadez Region in Niger. Its capital lies at the city of Tchirozerine. As of 2011, the department had a total population of 328,018 people.
It is divided administratively into the following communes:
Communes urbaines: Tchirozérine, Agadez
Communes rurales: Aderbissinat, Dabaga, Ingall, Tabelot