The Diocese of Novo Mesto (Latin: Dioecesis Novae Urbis; Slovene: Škofija Novo mesto) is a Latin Church diocese of the Catholic Church in the city of Novo Mesto in the ecclesiastical province of Ljubljana in Slovenia.

• April 7, 2006: Established as Diocese of Novo Mesto from the Metropolitan Archdiocese of Ljubljana

• Bishops of Novo Mesto (Roman rite)
  • Bishop Andrej Glavan (7 April 2006 – 30 June 2021)
  • Bishop Andrej Saje (30 June 2021 – present)

• Roman Catholicism in Slovenia

• Media related to Roman Catholic Diocese of Novo Mesto at Wikimedia Commons
• GCatholic.org
• Catholic Hierarchy

45°48′12.5″N 15°10′0.75″E / 45.803472°N 15.1668750°E / 45.803472; 15.1668750