The Roman Catholic Diocese of San Ignacio de Velasco (Latin: Dioecesis Sancti Ignatii Velascani) is a diocese located in the city of San Ignacio de Velasco in the ecclesiastical province of Santa Cruz de la Sierra in Bolivia.

• January 27, 1930: Established as Apostolic Vicariate of Chiquitos from the Diocese of Santa Cruz de la Sierra
• November 3, 1994: Promoted as Diocese of San Ignacio de Velasco

Using reverse chronological order:

• Bishops of San Ignacio de Velasco (Roman rite)
  • Bishop Robert Herman Flock (2017.02.02 – present)
  • Bishop Carlos Stetter (1995.07.29 – 2016.11.04)
  • Bishop Federico Bonifacio Madersbacher Gasteiger, O.F.M. (1994.11.03 – 1995.07.29)
• Vicars Apostolic of Chiquitos (Roman rite)
  • Bishop Federico Bonifacio Madersbacher Gasteiger, O.F.M. (1974.08.21 – 1994.11.03)
  • Bishop José Calasanz Rosenhammer, O.F.M. (1949.05.12 – 1974.08.21)
  • Bishop Juan Tarsicio Senner, O.F.M. (1942.02.25 – 1949)
  • Bishop Bertoldo Bühl, O.F.M. (1931.01.08 – 1941)

• Carlos Stetter (1995)
• Federico Bonifacio Madersbacher Gasteiger, O.F.M. (1970-1974), as Coadjutor Vicar Apostolic

• Carlos Stetter (1987-1995), appointed Coadjutor here

• Roman Catholicism in Bolivia

• GCatholic.org