Vajradhara

thumb|right|18th-century Chinese statue of Vajradhara made with wood and lacquer

Vajradhara (; ; ; ; ; ; ) is the ultimate primordial Buddha, or Adi-Buddha, according to the Sakya, Gelug and Kagyu schools of Tibetan Buddhism. It is also a name of Indra, because "Vajra" means diamond, as well as the thunderbolt, or anything hard more generally.