Watanabe was born on December 9, 1955, in Mito, Ibaraki Prefecture. He graduated from Takushoku University, Faculty of Commerce. During his studies at the university, he learned German while working for the German airline company Lufthansa.[1] Watanabe also spoke English.
Watanabe began his career in entertainment by appearing in a Coca-Cola television commercial in 1980.[2]
He married actress Hideko Hara (原 日出子, Hara Hideko) in 1994.
Watanabe was found dead at his private gym in the basement of his home on May 3, 2022,[3] and his death was announced by his management agency on May 5.[4] The cause of death was reportedly suicide by hanging.[3][4]
In a statement released through her agency, Hara said that during the self-isolation period forced by COVID-19, Watanabe began to express anxiety and was having trouble sleeping. He had just been diagnosed with dysautonomia and was beginning treatment around the time of his death.
^ ab"訃報 渡辺裕之" [Obituary Hiroyuki Watanabe] (Press release) (in Japanese). YK Agent. May 5, 2022. Archived from the original on June 7, 2022. Retrieved May 5, 2022.
^"オン・ザ・ロード". Shochiku. Archived from the original on July 22, 2021. Retrieved August 5, 2022.