Acala or Achala (Sanskrit: अचल, "The Immovable", IPA: [ˈɐt͜ɕɐlɐ]), also known as Acalanātha (अचलनाथ, "Immovable Lord") or Āryācalanātha (आर्याचलनाथ, "Noble Immovable Lord"), is a wrathful deity and dharmapala (protector of the Dharma) prominent in Vajrayana Buddhism and East Asian Buddhism. Acala has been worshiped throughout the Middle Ages and into modern times in Nepal, Tibet, China and Japan, where sculptural and pictorial representations of him are most often found.