Masao Harada, also known by the Japanese stage name Masao Harada, is a Japanese voice actor born on November 28, 1975, in Tokushima Prefecture. He is affiliated with the talent agency Arts Vision. Harada began his career in the late 1990s and has built a extensive portfolio of roles across animation, video games, and drama CDs.

Harada's career started in the mid-1990s, with one of his earliest known roles being in the 1996 video game NINJA MASTER'S ~Hao Ninpo Cho~. He trained at the Japan Narration Acting Institute, where he would later also serve as an instructor. His professional activities have been continuous since his debut, with his voice work spanning various genres and media.

One of Harada's notable early anime roles was Hepter in the 2000 series Transformers: Car Robot, which is known internationally as Transformers: Robots in Disguise. He gained further recognition in the early 2000s for his roles in two major series: he provided the voice of Denny Brosh in Fullmetal Alchemist and its subsequent 2005 film, Conqueror of Shamballa, and voiced the character Kagari in Naruto. Other significant television anime roles include Tiramisu in Papuwa, and various characters in Dear Boys, Samurai Champloo, and Eureka Seven. In addition to anime, Harada has contributed to numerous video games, such as Radiata Stories, where he voiced Clive Parker, and Shinsengumi ~Bakumatsu Gensou Renka Kitan~, as Harada Sanosuke.

While Harada is a prolific performer, there are few prominent recurring collaborations with specific directors or studios that stand out as a hallmark of his career. His work is characterized by a steady presence in a wide range of productions, often in supporting or ensemble roles. His voice can be heard in the drama CDs for series like Hana-Kimi and the EME series.

Harada's professional achievements include a lengthy and consistent career in the voice acting industry, demonstrating his versatility across different types of roles. His profile notes that he is skilled in his native Tokushima dialect, a variant of the Kansai dialect, and his hobbies include billiards and watching movies. His work continues into the 2020s, with recent credits in audio dramas such as Nakata Station Seven and Crescendo.