The Roman Catholic Diocese of Kangding (formerly spelled Kangting; Latin: Dioecesis Camtimensis; Chinese: 天主教康定教區) is a Latin Catholic diocese in the ecclesiastical province of the Metropolitan of Chongqing in western China, but still dependent on the Congregation for the Evangelization of Peoples.

Established on March 27, 1846 as the Apostolic Vicariate of Lhasa for the Mission of Tibet, its episcopal see is located in the city of Kangding, Sichuanese Tibet, known to the Tibetans as Dartsedo or Tatsienlu.

The diocese includes the western part of Sichuan Province and theoretically the entire Tibet Autonomous Region.

Specifically, it covers the two historical regions of Kham and Sikkim (the latter with its headquarters in Darjeeling, separated from the Apostolic Vicariate of Tibet in 1929); Western Sichuan such as the counties and cities of Garzê Tibetan Autonomous Prefecture: Batang, Dapba, Draggo, Garzê, Jagsam, Litang, Nyachukha, Nyagrong, Pelyül, Qagchêng, Rongzhag, Sêrxü, Tatsienlu, Tawu; two counties in Ngawa Tibetan and Qiang Autonomous Prefecture: Quqên and Tsanlha; Hanyuan County in Central Sichuan; counties in the former province of Hsikang: Dengke [zh], Enda [zh], Kemai [zh], Ningjing [zh], Taizhao [zh]; two counties and one city of Dêqên Tibetan Autonomous Prefecture in northwestern Yunnan Province: Dêqên, Shangri-La and Weixi; and counties and cities of the Tibet Autonomous Region: Chagyab and Gonjo (Chamdo), Gonggar (Lhoka), and Lhari (Nagqu).

[4] The Diocese of Kangding is bordered by the Diocese of Chengdu and Diocese of Jiading to the east; Diocese of Jammu–Srinagar and Diocese of Simla and Chandigarh to the west; Apostolic Prefecture of Xining and Diocese of Qinzhou to the northeast; Apostolic Prefecture of Xinjiang-Urumqi to the northwest; Diocese of Ningyuan, Diocese of Dali and Diocese of Myitkyina to the southeast; Diocese of Darjeeling and Diocese of Itanagar to the south; and Apostolic Vicariate of Nepal and Eparchy of Bijnor to the southwest.