Diocese of PinheiroHistory
- 22 July 1939: Established as Territorial Prelature of Pinheiro from the Territorial Prelature of São José do Grajaú and Metropolitan Archdiocese of São Luís do Maranhão
- 16 October 1979: Promoted as Diocese of Pinheiro
Bishops
- Apostolic Administrator
- Prelates of Pinheiro (Roman Rite)
- José Maria Lemerder † (1944 - 1946) Died
- Alfonso Maria Ungarelli, M.S.C. † (13 Nov 1948 - 1 Mar 1975) Retired
- Carmelo Cassati, M.S.C. (17 Jun 1975 - 12 Feb 1979) Appointed, Bishop of Tricarico
- Ricardo Pedro Paglia, M.S.C. (3 Jul 1979 - 16 Oct 1979) Appointed Bishop here
- Bishops of Pinheiro (Roman rite)
- Ricardo Pedro Paglia, M.S.C. (16 Oct 1979 – 17 Oct 2012) Retired
- Elio Rama, I.M.C. (17 Oct 2012–present)