The Roman Catholic Diocese of Hamilton is a diocese located in Ontario, Canada. Established in 1856, it serves the spiritual needs of Catholics in the region, encompassing several communities and parishes. The diocese is part of the larger ecclesiastical province of Toronto and is led by a bishop who oversees its activities and administration. The diocese is committed to various ministries, including education, social justice, and pastoral care. It operates numerous schools and charitable organizations, aiming to support the local community and promote the teachings of the Catholic Church. The diocese also hosts events and programs to engage parishioners and foster spiritual growth.