The Roman Catholic Diocese of Geita (Latin: Dioecesis Geitaënsis) is a diocese located in Geita in the ecclesiastical province of Mwanza in Tanzania.

• November 8, 1984: Established as Diocese of Geita from the Diocese of Mwanza

• Bishops of Geita (Roman rite)
  • Bishop Aloysius Balina (November 8, 1984 – August 8, 1997), appointed Bishop of Shinyanga
  • Bishop Damian Dalu (April 14, 2000 - March 14, 2014), appointed Archbishop of Songea
  • Bishop Flavian Kassala (April 28, 2016 – Present)

• Roman Catholicism in Tanzania

• GCatholic.org
• Catholic Hierarchy

2°52′44″S 32°14′27″E / 2.8789°S 32.2409°E / -2.8789; 32.2409