The Diocese of Kalisz is a Roman Catholic diocese located in Poland. Established in 1992, it is part of the Ecclesiastical Province of Wrocław. The diocese covers the area of Kalisz and its surrounding regions, serving a diverse population of Catholics. The diocese is known for its rich history and cultural heritage, with numerous churches and religious sites. Its administrative center is the Cathedral of St. Nicholas in Kalisz, which serves as the seat of the bishop. The diocese focuses on pastoral care, education, and community outreach within its jurisdiction.