The Diocese of Kaohsiung (Lat: Dioecesis Kaohsiungensis) is a Latin Church diocese of the Catholic Church in Taiwan.

Diocese of Kaohsiung Dioecesis Kaohsiungensis 天主教高雄教區
Holy Rosary Cathedral, Kaohsiung
Location
Country	Taiwan
Territory	Kaohsiung and Pingtung County
Ecclesiastical province	Taipei
Statistics
Area	5,723 km2 (2,210 sq mi)
Population - Total - Catholics	(as of 2017) 3,606,851 37,814 (1.0%)
Parishes	60
Churches	111
Information
Denomination	Roman Catholic
Sui iuris church	Latin Church
Rite	Roman Rite
Established	July 19, 1913; 110 years ago (1913-07-19)
Cathedral	Holy Rosary Cathedral, Kaohsiung
Secular priests	35
Current leadership
Pope	Francis
Bishop	Peter Liu Cheng-chung
Metropolitan Archbishop	Thomas Chung An-zu
Map
Website
Website of the Diocese

The diocese has the distinction of being the first Catholic ecclesiastical territory erected on the island of Taiwan. Created as the Apostolic Prefecture of the Island of Formosa in 1913, the name was changed to the Apostolic Prefecture of Kaohsiung in 1949. In 1961, the Prefecture was elevated to a full diocese, and became a suffragan to the Archdiocese of Taipei.

The current bishop is Peter Liu Cheng-chung, appointed in January 2006. In November 2009, he was given the "ad personam" (personal) title of archbishop by Pope Benedict XVI.