The Diocese of Požega (Croatian: Požeška biskupija; Latin: Dioecesis Posegana) is a Latin ecclesiastical territory or diocese of the Catholic Church in the Slavonia region of Croatia.

Požega was selected as the seat of diocese because of its historic tradition, as an urban centre since the 13th century.

It was also the site of the first institution of higher education in Slavonia - the Jesuit Academy established in 1761.

The diocese covers the territory of western Slavonia as well as parts of Podravina (Virovitica) and Posavina (Nova Gradiška).

This region suffered greatly during the Croatian War of Independence, and the need for the church to help in the recovery was another reason for the diocese's creation.