Hiroyuki Sonoda (園田 博之, Sonoda Hiroyuki, February 19, 1942 – November 11, 2018) was a Japanese politician who served in the Diet (national legislature) as a member of the House of Representatives for Kumamoto 4th district; following the 2017 general election when Kumamoto lost one seat due to reapportionment, he moved to the Kyūshū proportional representation block.

A native of Amakusa District, Kumamoto and graduate of Nihon University, Sonoda was elected for the first time in 1986, when he ran for his father's seat in Kumamoto Prefecture's 2nd district, a five-member district at the time.

His father, the Foreign Minister Sunao Sonoda, died in 1984.

[citation needed] Hiroyuki Sonoda joined the Sunrise Party of Japan on April 10, 2010.

[citation needed] Hiroyuki Sonoda was affiliated to the openly revisionist lobby Nippon Kaigi, and his late step-mother Tenkoko Sonoda (the second wife and the widow of his father) was a member of its representative committee.