- Birth: 1503?
- Death: 1560
- Distinction: Musashi warlord
- Title: Koga Kubo
- Sons: Ashikaga Yoshiuji
- Japanese: 足利 晴氏 (Ashikaga Haruuji)
Haruuji was the son of Ashikaga Takamoto (1485-1535) and was married to the the daughter of Hôjô Ujitsuna. Originally allied to the Hôjô, Haruuji, who resided at Koga castle, betrayed Ujitsuna in 1544 and joined in the attack on Kawagoe castle. Following a later defeat at the hands of the Hôjô in 1554, Haruuji was captured at Koga and forced to accept Hôjô rule. He died of illness in the 5th month of 1560.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005