Yukichi Chuganji (中願寺 雄吉, Chūganji Yūkichi?, March 23, 1889 – September 28, 2003) was a Japanese supercentenarian, the world's oldest person, and the world's oldest man until his death at age 114 years 189 days. Chuganji held the title of Japan's and Asia's oldest living man for over 3 and a half years - the longest that this title has ever been held. Chuganji was the last surviving Asian man born before 1894, as his successor as Asia's oldest living man, Kameni Nakamura, was born in late 1894 and was over five and a half years younger than Chuganji. Chuganji was one of the very few men to hold the WOP title, along with Emiliano Mercado del Toro in 2006-2007.
A retired silkworm breeder, he lived in the city of Ogori, Fukuoka Prefecture, with his 74-year-old daughter Kyoko.
Chuganji was the second fully verified man in history to reach age 114, after Christian Mortensen. He died as the oldest verified Asian man ever, breaking the record of 112 years, 191 days by nearly 2 years set by Denzo Ishizaki and continued to hold the record for a little more than eight years, until being surpassed by Jiroemon Kimura on 26 October 2011. He remains the fifth oldest undisputed man in history.