The Diocese of Bielsko–Żywiec (Latin: Dioecesis Bielscensis-Zyviecensis) is a Latin diocese of the Catholic Church located in the cities of Bielsko and Żywiec in the ecclesiastical province of Kraków in Poland.

It was established as the Diocese of Bielsko–Żywiec from the Diocese of Katowice and Metropolitan Archdiocese of Kraków on 25 March 1992. In 2013 about a half of the then Catholic Church members attended church services at least once per week.

Bishops of Bielsko–Żywiec (Roman rite)

• Bishop Tadeusz Rakoczy (25 March 1992 − 16 November 2013)
• Bishop Roman Pindel (since 6 January 2014)

• 
  Żywiec Co-Cathedral
• 
  Rotunda of Saint Nicolas in Cieszyn
• 
  Sanctuary in Rychwałd
• 
  Saint Matthias church in Andrychów
• 
  Saint Clemens church in Ustroń

• Roman Catholicism in Poland

• GCatholic.org
• Catholic Hierarchy
• Diocese website