Heisei Kenkyūkai
Heisei Kenkyūkai was a faction within the Liberal Democratic Party. It was led by Toshimitsu Motegi, the former secretary-general of the LDP.
Faction heads
Faction heads who became prime minister are in bold.| Image | Faction head | Years | |
| 1 | Noboru Takeshita | 1987 | |
| 2 | Shin Kanemaru | 19871992 | |
| 3 | Keizo Obuchi | 19921998 | |
| 4 | Tamisuke Watanuki | 19982000 | |
| 5 | Ryutaro Hashimoto | 20002004 | |
| - | N/A | Vacant | 20042005 |
| 6 | Yūji Tsushima | 20052009 | |
| 7 | Fukushiro Nukaga | 20092018 | |
| 8 | Wataru Takeshita | 20182021 | |
| 9 | Toshimitsu Motegi | 20212024 |