The Roman Catholic Diocese of Novo Hamburgo (Latin: Dioecesis Novohamburgensis) is a diocese located in the city of Novo Hamburgo in the ecclesiastical province of Porto Alegre in Brazil.

• 2 February 1980: Established as Diocese of Novo Hamburgo from the Metropolitan Archdiocese of Porto Alegre

• Bishops of Novo Hamburgo (Roman rite), in reverse chronological order
  • Bishop João Francisco Salm (2022.01.19 – ...)
  • Bishop Zeno Hastenteufel (2007.03.28 – 2022.01.19)
  • Bishop Osvino José Both (1995.11.22 – 2006.06.07), appointed Archbishop of Brazil, Military
  • Bishop Carlos José Boaventura Kloppenburg, O.F.M. (1986.08.08 – 1995.11.22)
  • Bishop Aloísio Sinésio Bohn (1980.02.13 – 1986.06.27), appointed Bishop of Santa Cruz do Sul, Rio Grande do Sul

• Edson Batista de Mello, appointed Bishop of Cachoeira do Sul, Rio Grande do Sul

• GCatholic.org
• Catholic Hierarchy
• Diocese website (Portuguese) Archived 2008-05-20 at the Wayback Machine

29°40′30″S 51°07′50″W / 29.675°S 51.1305555556°W / -29.675; -51.1305555556