The Catholic Diocese of Most Holy Trinity in Almaty (Latin: Sanctissimae Trinitatis in Almata) is a diocese located within the city of Almaty in the ecclesiastical province of Mary Most Holy in Astana in Kazakhstan.

• July 7, 1999: Established as Apostolic Administration of Almaty from the Apostolic Administration of Kazakhstan
• May 17, 2003: Promoted as Diocese of Most Holy Trinity in Almaty

• Apostolic Administrators of Almaty (Roman rite)
  • Bishop Henry Theophilus Howaniec, O.F.M. (July 7, 1999 – May 17, 2003)
• Bishops of Most Holy Trinity in Almaty (Roman rite)
  • Bishop Henry Theophilus Howaniec, O.F.M. (May 17, 2003 – March 5, 2011)
  • Bishop José Luís Mumbiela Sierra (since March 5, 2011)

• Catholic Church in Kazakhstan

• GCatholic.org
• Catholic Hierarchy
• The Catholic Church in Kazakhstan

43°15′23″N 76°52′14″E / 43.2565°N 76.8705°E / 43.2565; 76.8705