720s in Japan

was a after Jinki and before Tenpyō-kanpō. This period spanned the years from August 729 through April 749. The reigning emperor was .

was a after Reiki and before Jinki. This period spanned the years from November 717 through February 724. The reigning empress was .

Japanese era from 724 to 729

720–721 rebellion in Kyushu against the Yamato dynasty of Japan