The Diocese of Townsville is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church in Australia.

It is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Brisbane.

Erected in 1930, the Diocese of Townsville covers North Queensland.

It was assembled from territory separated from the Diocese of Rockhampton.

The following men have been Bishops of Townsville:[1] The diocese is divided into four separate deaneries that administer individual parishes:[3] The Townsville Catholic Education Office operates a number of schools in the diocese:[citation needed]