Fabijan (Fabian) Abrantovich (Abrantovic, Abrantowicz) (Belarusian: ?????? ??????????; September 14, 1884 – January 2, 1946) was a prominent religious and civic leader from Belarus.
Abrantovich was significant in the struggle for the recognition of the Belarusian language in the Roman Catholic Church, the indoctrination of Belarusians of the Roman Catholic faith in their national character, and to the revival of concepts dealing with Belarusian statehood.