Paul Sueo Hamaguchi (1 August 1948 – 28 December 2020) was a Japanese Roman Catholic bishop. Hamaguchi was born in Oita, Japan. He became a priest in 1975. He was bishop of the Roman Catholic Diocese of Oita, Japan, from 2011 until his death.
Hamaguchi died on 28 December 2020 at the age of 72.