Petro Pakhnyuk or Petro Pakhniuk (Ukrainian: ????? ??????; born 26 November 1991 in Kyiv, Ukraine) is a Ukrainian (until 2014 and after 2017) and Azerbaijani (2014-2017) male artistic gymnast and member of the national team.
He participated at the 2014 World Artistic Gymnastics Championships in Nanning, China, and qualified for the 2015 European Games and 2016 Summer Olympics.
He is medalist of the European Games, Summer Universiades and European Championships.