Very Reverend Vasyl Mastsiukh (Ukrainian: ?????? ??????; Polish: Bazyli Masciuch; 30 March 1873 in Nowa Wies, Austro-Hungarian Empire /present day Nowa Wies, Nowy Sacz County, Poland/ – 12 March 1936 in Rymanów-Zdrój, Second Polish Republic) was a Greek Catholic hierarch.
He served as the first Apostolic Administrator of the new created Apostolic Administration of Lemkowszczyzna from 17 November 1934 until his death on 12 March 1936.