Virupa (Skt. Virūpa; Tib. བི་རུ་པ་, བི་ཝ་པ་, Wyl. bi ru pa or bir wa pa) was one of the eighty-four mahasiddhas of India and an important source of the teachings set down in the Lamdré of the Sakya school. He is also known by the name Tutop Wangchuk (Tib. མཐུ་སྟོབས་དབང་ཕྱུག་, Wyl. mthu stobs dbang phyug).