The Diocese of Ponta Grossa (Latin: Dioecesis Ponta Grossa) is a territorial division of the Catholic Church in the state of Paraná, Brazil.

It was created in 1926 by Papal bull Quum in Dies Numerus of Pope Pius XI, with bula Quum in numerus.

It is the largest centre of vocations throughout the Paraná, responsible for 40% of all priests present in Parana.

The Diocese of Ponta Grossa is composed of 13 cities: Carambeí, Castro, Imbituva, Ipiranga, Ponta Grossa, Telêmaco Borba, Ortigueira, Reserva, Tibagi, Ivaí, Piraí do Sul, Teixeira Soares, Fernandes Pinheiro, Ventania, Irati, Guamiranga, and Imbaú.

This article on a Roman Catholic diocese in Brazil is a stub.