Vasyl Mastsiukh (Ukrainian: Василь Масцюх; Polish: Bazyli Maściuch; 30 March 1873 in Nowa Wieś, Austro-Hungarian Empire /present day Nowa Wieś, Nowy Sącz 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.