Kālacakra (Sanskrit: कालचक्र Tibetan: དུས་ཀྱི་འཁོར་ལོ།, dus kyi ‘khor lo) or Wheel of Time is a set of Vajrayāṇa Buddhist teachings and practises.

Kālacakra is made famous by the mass initiations in the west by His Holiness the Dalai Lama.

Although philologists have established that the texts on Kālacakra were written 1500 years after the historical Buddha, Vajrayāṇa Buddhists claim this tantra was taught by the historical Buddha in the year after he attained enlightenment.

The teachings supposedly took place in Dhanyakaṭaka (Present day Amaravati అమరావతి in Andhra Pradesh). Of the stūpa build by King Aśoke in the second century BCE now only a ruin remains (Pictured below – February 2005).