Amoghavajra (Sanskrit: अमोघवज्र Amoghavajra; Chinese: 不空; pinyin: Bùkōng; Japanese: Fukū; Korean: 불공; Vietnamese: Bất Không, 705–774) was a prolific translator who became one of the most politically powerful Buddhist monks in Chinese history and is acknowledged as one of the Eight Patriarchs of the Doctrine in Shingon Buddhism.