Hiroshi Yazaki is a Japanese actor and voice actor born on July 10, 1987, in Yamagata Prefecture, Japan. His career began in theater and stage musicals before expanding into anime voice work and television drama.

Yazaki made his professional debut in 2004, originating in a stage production of the musical Sorairo Magatama with the Himawari Theater Company. While he maintains an active presence in live-action television and stage productions, he is recognized by anime audiences for two primary voice roles from the mid-2000s.

In 2006, Yazaki provided the voice of Motoharu Yano, the male lead in the romance anime series Bokura ga Ita (also known as We Were There). The character is a popular high school student whose past relationship and personal struggles form the central conflict of the story. The following year, in 2007, he took on the lead role of Age in the science fiction anime series Heroic Age. In this space opera, Age is a young man with immense cosmic powers who becomes central to the fate of the human race. His performance in Heroic Age marked one of his most prominent assignments as a lead voice actor in an anime series.

Beyond his anime credits, Yazaki has appeared in numerous television dramas, including roles in the long-running series Gokusen and Kamen Rider Den-O. He also maintains an extensive career in stage theater, performing in musical adaptations of popular franchises such as The Prince of Tennis and Hakuouki. His involvement with The Prince of Tennis musicals, known as Tenimyu, includes portraying the character Minami Kentarou. His stage work also encompasses classical productions, including a lead role as Macbeth in a 2012 production of the Shakespearean tragedy.

Yazaki continues to work across multiple entertainment mediums, balancing his career as both a voice actor and a stage performer.