An Opır, also known as a Yuvdarxa, Yuvxa, Vupı̆r, Vı̆pı̆r, or Uvır (Türkmen: Ювдарха, Yuvdarxa; Ювха, Yuvxa “monster, dragon; greedy;” Çŏvaş: вупăр, Vupı̆r; вăпăр Vı̆pı̆r “evil spirit, unclean spirit, monster, ghoul, vampire;” Tatar: убыр, Uvır 'a mythological monster') is a type of monster in Turkic mythology.