The Roman Catholic Diocese of Labuan Bajo (Latin: Dioecesis Portus Bajavensis) is a diocese of the Latin Church of the Catholic Church, located in the Lesser Sunda Islands, Indonesia.

The diocese was split from Roman Catholic Diocese of Ruteng and was established on 21 June 2024.

The diocese was established on 21 June 2024, on territory split from Roman Catholic Diocese of Ruteng.

[2][3] Its erection was the result of the 3rd diocesan synod in Ruteng in 2021.

[4] On 21 June 2024 The Holy See announced its erection and appointed Fr.