Yasuo Fukuda (福田 康夫, Fukuda Yasuo; born 16 July 1936) is a Japanese politician who served as Prime Minister of Japan from 2007 to 2008. He was previously the longest-serving Chief Cabinet Secretary in Japanese history, serving in that role from 2000 to 2004 under Prime Ministers Yoshirō Mori and Junichiro Koizumi. His record was surpassed by Yoshihide Suga, who served almost twice as long.
Following the resignation of Prime Minister Shinzo Abe, Fukuda was elected as President of the Liberal Democratic Party and became prime minister in September 2007. Fukuda was the first son of a former Japanese Prime Minister (Takeo Fukuda) to also take up the post. On 1 September 2008, Fukuda announced his resignation as party leader, and was succeeded by Tarō Asō. Although Japan hosted the G8 summit meeting without mishap during Fukuda's time in office, he himself earned little or no credit from ordinary Japanese, and when he resigned, he became the first of the G8 leaders to leave office.