Emperor Tenji , known first as Prince Katsuragi and later as Prince Nakano Ōe until his accession, was the 38th emperor of Japan who reigned from 668 to 671. He was the son of Emperor Jomei and Empress Kōgyoku, and his children included Empress Jitō, Empress Genmei, and Emperor Kōbun.

Emperor Jomei was the 34th emperor of Japan, according to the traditional order of succession.