Abe no Seimei, Japanese astrologer (d. 1005)
Abe no Seimei (安倍 晴明, February 21, 921 A.D. – October 31, 1005) was an onmyōji, a leading specialist of Onmyōdō during the middle of the Heian period in Japan. In addition to his prominence in history, he is a legendary figure in Japanese folklore. He has been portrayed in several stories and films.

Seimei worked as an onmyōji for emperors and the Heian government, advising on the spiritually correct way to deal with issues. He prayed for the well-being of emperors and the government and advised on various issues. He was also an astrologer and predicted astrological events. He enjoyed an extremely long life, free from any major illness, contributing to the popular belief that he had mystical powers.

The Seimei Shrine, located in Kyoto, is a famous shrine dedicated to him. The Abeno train station and district in Osaka are sometimes named after him, as it is one of the locations where legends place his birth.