Hiroshi Iwasaki, born on May 29, 1953, in Saitama Prefecture, is a Japanese actor and voice actor. He is affiliated with the theater company Gekidan Seinenza, having graduated from the Seinenza Acting Academy as part of its fifth cohort. His blood type is A, and he stands at a height of 173 cm. In addition to his performance work, he possesses skills in jazz dance, tap dancing, and choreography.

Iwasaki began his entertainment career in the 1970s with a foundation in stage performance, joining Gekidan Seinenza at that time. He later expanded into television, appearing in historical dramas, and became increasingly active in anime voice-over from the mid-2000s onward. His voice is frequently heard in supporting and character roles, often portraying middle-aged and elderly men.

Among his many anime credits are the specific roles listed by the user: James Chester in Vatican Miracle Examiner, Masa Tatsumi (referred to as Tsumu Tatsumi in some sources) in Deaimon: Recipe for Happiness, Chenran Shi in both Donten ni Warau Gaiden films, Dr. Brain in Survive! Inside the Human Body, Elder in RoboDz, Christan Berouki in Flag, Akaooni in Glitter Force, Amala in the film Tibetan Dog, Frenic in Dragon Age: Dawn of the Seeker, and Dr. Noh in Kagaku Manga Survival Series.

Beyond these, he is widely recognized for his role as the tailed beast Shukaku in the Naruto anime series, a part he has played for many years, including in Boruto: Naruto Next Generations. His other prominent anime roles include邦枝一刀斎 (Ittosai Kunieda) in Beelzebub, Dr. Saito in the Tiger & Bunny series, Bacchus in Rage of Bahamut, and Galand in The Seven Deadly Sins.

In addition to original animation, Iwasaki has an extensive career in voice-dubbing foreign films and television series. He is the regular Japanese voice actor for actors Rowan Atkinson and Stanley Tucci. Among his many notable dubbing roles are C-3PO in the Star Wars series, Caesar Flickerman in The Hunger Games films, and various characters in the Ice Age and Transformers film series. He has also contributed his voice to video games, such as Final Fantasy X. His career is marked by a consistent presence across a wide spectrum of Japanese media, from major anime franchises to live-action dubbing and television dramas.