Japan: Emperors: 593-984

Each ruler is recorded under the personal name and the dates of the reign; the other entries follow the definitions in the Notes.
Tennō (from ca. 672)
15 Jan 593 - 15 Apr 628 Nukadabe
old posthumous name: Toyo-mike-kashiki-ya-hime-no-sumera-mikoto
posthumous name: Suiko-tennō
2 Feb 629 - 17 Nov 641 Tamura
old posthumous name: Okinaga-tarashi-hi-hiro-nuka-no-sumera-mikoto
posthumous name: Jomei-tennō
19 Feb 642 - 12 Jul 645 Takara
old posthumous name: Ame-toyo-takura-ikashi-hi-tarashi-hime-no-sumera-mikoto
posthumous name: Kōgyoku-tennō
12 Jul 645 - 24 Nov 654 Karu
old posthumous name: Ame-yorozu-toyo-hi-no-sumera-mikoto
posthumous name: Kōtoku-tennō
era name: 17 Jul 645 - 22 Mar 650 Taika (alternative reading: Daika)
era name: 22 Mar 650 - 24 Nov 654 Hakuchi (alterantive reading: Byakuchi)
14 Feb 655 - 24 Aug 661 Takara (x)
old posthumous name: Ame-toyo-takura-ikashi-hi-tarashi-hime-no-sumera-mikoto
posthumous name: Saimei-tennō (alternative reading: Saimyō-tennō)
24 Aug 661 - 7 Jan 672 Katsuragi Naka-no-ōe [1]
old posthumous name: Ame-mikoto-hirakasu-wake-no-sumera-mikoto
posthumous name: Tenji-tennō
9 Jan 672 - 21 Aug 672 Ōtomo Iga
posthumous name: Kōbun-tennō
private era name: 672-672 Suzaku (alternative reading: Shujaku)
20 Mar 673 - 1 Oct 686 Ō-ama
old posthumous name: Ame-no-nunahara-oki-no-mabito-no-sumera-mikoto
posthumous name: Tenmu-tennō
private era name: 673-686 Hakuhō (alterantive reading: Byakuhō)
era-name: 14 Aug 686 - 13 Feb 690: Shuchō (alternative reading: Suchō)
1 Oct 686 - 22 Aug 697 Uno-no-sarara [2]
old posthumous name: Takama-no-hara-hiro-no-hime-no-sumera-mikoto
posthumous name: Jitō-tennō
22 (or 23) Aug 697 - 18 Jul 707 Karu
old posthumous name: Ama-no-mamune-toyo-ōji-no-sumera-mikoto
posthumous name: Monmu-tennō
era name: 3 May 701 - 16 Jun 704 Taihō (alternative reading: Daihō)
era name: 16 Jun 704 - 7 Feb 708 Kyōun (alternative reading: Keiun)
27 Jul 707 - 3 Oct 715 Abe
old posthumous name: Yamato-neko-amatsu-mi-shiro-toyo-kuni-nari-hime-no-sumera-mikoto
posthumous name: Genmei-tennō (alternative reading: Genmyō-tennō)
era name: 7 Feb 708 - 3 Oct 715 Wadō
3 Oct 715 - 3 Mar 724 Hitaka Nii-no-mi
old posthumous name: Yamato-neko-taka-mizu-kiyo-tarashi-hime-no-sumera-mikoto
posthumous name: Genshō-tennō
era name: 3 Oct 715 - 24 Dec 717 Reiki
era name: 24 Dec 717 - 3 Mar 724 Yōrō
3 Mar 724 - 19 Aug 749 Ōbito (Buddhist name in retirement: Shōman)
old posthumous name: Ame-shirushi-kuni-oshi-haruki-toyo-asakura-hiko-no-sumera-mikoto
posthumous name: Shōmu-tennō
era name: 3 Mar 724 - 2 Sep 729 Jinki (alterantive reading: Shinki)
era name: 2 Sep 729 - 4 May 749 Tenpyō (alternative readings: Tenpei, Tenbyō)
era name: 4 May 749 - 19 Aug 749 Tenpyō-kanpō
19 Aug 749 - 7 Sep 758 Abe
old posthumous name: Taka-no-hime-no-sumera-mikoto
posthumous name: Kōken-tennō
by-name between reigns: 7 Sep 758 - 6 Nov 764 Takano-tennō
era name: 19 Aug 749 - 6 Sep 757 Tenpyō-shōhō (alternative reading: Tenpei-shōhō)
era name: 6 Sep 757 - 1 Feb 765 Tenpyō-hōji (alternative reading: Tenpei-hōji)
7 Sep 758 - 6 Nov 764 Ō-i
posthumous name: Junnin-tennö, posthumous by-name: Awaji-no-haitei
6 Nov 764 - 28 Aug 770 Abe (x) (Buddhist name in retirement: Hokini)
old posthumous name: Taka-no-hime-no-sumera-mikoto
posthumous name: Shōtoku-tennō
era name: 1 Feb 765 - 13 Sep 767 Tenpyō-jingo (alternative readings: Tenpei-jingo, Tenpyō-shingo)
era name: 13 Sep 767 - 23 Oct 770 Jingo-keiun
28 Aug 770 - 30 Apr 781 Shirakabe
old posthumous name: Ame-mune-taka-tsugi-no-sumera-mikoto
posthumous name: Kōnin-tennō
era name: 23 Oct 770 - 30 Jan 781 Hōki
era name: 30 Jan 781 - 30 Sep 782 Ten'ō (alternative reading: Tennō)
30 Apr 781 - 9 Apr 806 Yamabe
old posthumous name: Yamato-neko-amatsu-hitsugi-iyaderi-no-sumera-mikoto
posthumous name: Kanmu-tennō, posthumous by-name: Kashiwabara-haitei
era name: 30 Sep 782 - 8 Jun 806 Enryaku
9 Apr 806 - 18 May 809 Ate
old posthumous name: Yamato-neko-ame-oshi-kuni-take-hiko-no-sumera-mikoto
posthumous name: Heizei-tennō (alternative reading: Heijō-tennō), posthumous by-name: Nara-tei
era name: 8 Jun 806 - 20 Oct 810 Daidō (alternative reading: Taidō)
18 May 809 - 29 May 823 Kamino
posthumous name: Saga-tennō
era name: 20 Oct 810 - 8 Feb 824 Kōnin
29 May 823 - 22 Mar 833 Ōtomo
old posthumous name: Yamato-neko-ame-takayuzuru-iyatō-no-sumera-mikoto
posthumous name: Junna-tennō, posthumous by-name: Sai-in-tennō
era name: 8 Feb 824 - 14 Feb 834 Tenchō
22 Mar 833 - 6 May 850 Masara (alternative reading: Masayoshi)
old posthumous name: Yamato-neko-ame-shirushi-toyo-sato-no-sumera-mikoto
posthumous name: Ninmyō-tennō, posthumous by-name: Fukakusa-tei
era name: 14 Feb 834 - 16 Jul 848 Jōwa (alternative readings: Sōwa, Shōwa)
era name: 16 Jul 848 - 1 Jun 851 Kashō (alternative reading: Kajō)
6 May 850 - 7 Oct 858 Michiyasu
posthumous name: Montoku-tennō, posthumous by-name: Tamura-tei
era name: 1 Jun 851 - 23 Dec 854 Ninju
era name: 23 Dec 854 - 20 Mar 857 Saikō (alternative reading: Seikō)
era name: 20 Mar 857 - 20 May 859 Tennan (alternative reading: Ten'an)
7 Oct 858 - 18 Dec 876 Korehito (Buddhist name after retirment: Soshin)
posthumous name: Seiwa-tennō, posthumous by-name: Mino-o-tei
era name: 20 May 859 - 1 Jun 877 Jōgan (alternative readings: Jōkan, Teikan)
18 Dec 876 - 4 Mar 884 Sadaakira
posthumous name: Yōzei-tennō, posthumous by-name: Nijō-in
era name: 1 Jun 877 - 11 Mar 885 Gangyō (alternative readings: Genkei, Kankyō, Kenkei, Gengyō)
4 (or 5) Mar 884 - 17 Sep 887 Tokiyasu
posthumous name: Kōkō-tennō, posthumous by-name: Komatsu-tei
era name: 11 Mar 885 - 30 May 889 Ninna (alternative reading: Ninwa)
17 Sep 887 - 4 Aug 897 Sadami (alternative reading: Sadayoshi; Buddhist name after retirement: Kongō-kaku)
posthumous name: Uda-tennō, posthumous by-name: Chōji-in-tei
era name: 30 May 889 - 20 May 898 Kanpyō (alternative reading: Kanpei)
4 Aug 897 - 16 Oct 930 Atsugimi (alternative reading: Atsuhito; Buddhist name after retirement: Hō-kongō)
posthumous name: Daigo-tennō, posthumous by-name: Ono-tei
era name: 20 May 898 - 31 Aug 901 Shōtai
era name: 31 Aug 901 - 29 May 923 Engi (alternative reading: Enki)
era name: 29 May 923 - 16 May 931 Enchō
16 Oct 930 - 23 May 946 Yutaakira (alternative reading: Hiraakira)
posthumous name: Suzaku-tennō (alternative reading: Shujaku-tennō)
era name: 16 May 931 - 22 Jun 938 Shōhei (alternative readings: Jōhei, Shōhyō)
era name: 22 Jun 938 - 15 May 947 Tengyō (alternative reading: Tenkei)
23 May 946 - 5 Jul 967 Nariakira (Buddhist name after retirment: Hō-kongō)
posthumous name: Murakami-tennō
era name: 15 May 947 - 21 Nov 957 Tenryaku (alternative reading: Tenreki)
era name: 21 Nov 957 - 5 Mar 961 Tentoku
era name: 5 Mar 961 - 19 Aug 964 Ōwa
era name: 19 Aug 964 - 8 (or 10) Sep 968 Kōhō (alternative reading: Kōho)
5 Jul 967 - 27 Sep 969 Norihira
posthumous name: Reizei-tennō, posthumous by-name: Reizei-in Jōkō
era name: 8 (or 10) Sep 968 - 3 May 970 Anna (alternative reading: Anwa)
27 Sep 969 - 24 Sep 984 Morihira (Buddhiast name after retirement: Kongō Hō)
posthumous name: En'yū-tennō
era name: 3 May 970 - 16 Jan 974 Tenroku
era name: 16 Jan 974 - 11 Aug 976 Ten'en (alternative reading: Tennen)
era name: 11 Aug 976 - 31 Dec 978 Jōgen (alternative reading: Teigen)
era name: 31 Dec 978 - 29 May 983 Tengen (alternative reading: Tenken)
era name: 29 May 983 - 19 May 985 Eikan (alternative readings: Enkan, Yōkan)

[1] Governed 24 Aug 661 - 20 Feb 668 as Kōtaishi ("prince imperial") before installation.
[2] 1 Oct 686 - 18 May 688 nominally governed for Kusakabe-ōji (died before proclamation; posthumous name: Okanomiyagou-tennō) and was installed only 14 Feb 690.
Last updated on: 22 Jul 2014 12:12:37