The Diocese of Hualien () is a Latin Church diocese of the Catholic Church in Taiwan.
Erected as the Apostolic Prefecture of Hualien in 1952, the prefecture was elevated to a full diocese, in 1963. The diocese is suffragan to the Archdiocese of Taipei.
The current bishop is Philip Huang Chao-ming, appointed in November 2001.
Catholics are 10.3% (56,401) ofÃÂ the totalÃÂ population (548,870).