Longchenpa (Tib. ཀློང་ཆེན་པ་, Wyl. klong chen pa), also known as Longchen Rabjam (Tib. ཀློང་ཆེན་རབ་འབྱམས་, klong chen rab ‘byams), ‘Infinite, Vast Expanse of Space’, or Drimé Özer (1308-1364), was one of the most brilliant teachers of the Nyingma lineage. He systematized the Nyingma teachings in his ‘Seven Treasures’ and wrote extensively on Dzogchen. He transmitted the Longchen Nyingtik cycle of teachings and practice to Jikmé Lingpa, and it has since become one of the most widely practised of traditions.