Masashi Yamane is a Japanese voice actor from Tottori Prefecture, born on May 25. He is affiliated with the agency I'm Enterprise, a connection he has held since 2017 after graduating from the Japan Narration Acting Institute. Standing approximately 190 cm tall, he has a notable physical presence that complements his work.

Yamane's career is primarily defined by a wide array of supporting and character roles in anime, where his voice is frequently cast for characters with a deeper, more powerful register. His filmography demonstrates a remarkable versatility in bringing to life a diverse range of figures, from monsters and soldiers to authority figures and comedic characters. His roles often include the Minotaur in the series Sleepy Princess in the Demon Castle and Klimt Kristoff von Armstrong in The 8th son? Are you kidding me?. He also voiced Zephyr Try in the web anime Battle Spirits: Kakumei no Galette and was announced as the new voice actor for the character Aiko Zahn in Mobile Suit Gundam: Iron-Blooded Orphans – Urðr Hunt, taking over the role from a previous actor.

His career began to gain momentum in 2018, with appearances in a multitude of television series. He had roles in productions such as Goblin Slayer, Sword Art Online Alicization, and Zombie Land Saga. In 2020, he took on a wider variety of parts in series like The 8th son? Are you kidding me?, Sleepy Princess in the Demon Castle, and Uzaki-chan Wants to Hang Out! where he voiced the Governor of Tottori Prefecture. He continued to build an extensive list of credits in subsequent years, featuring in major franchises including Re:Zero - Starting Life in Another World, That Time I Got Reincarnated as a Slime, Mushoku Tensei: Jobless Reincarnation, and the Yu-Gi-Oh! franchise. More recent work includes roles in SHY, Synduality: Noir, and The Weakest Tamer Began a Journey to Pick Up Trash.

Beyond anime, Yamane is also active in the video game industry. He has contributed voices to long-running mobile games like Kotodaman and Monster Strike, as well as major console titles such as SD Gundam Battle Alliance and Street Fighter 6.

A recurring theme in Yamane's professional life is his connection with senior voice actor Yoshitsugu Matsuoka. Before becoming a voice actor himself, Yamane was a dedicated fan of Matsuoka's work, having followed his career since his first leading role in the anime Kamisama no Memochou. In 2021, Yamane was selected to be an assistant on Matsuoka's popular internet radio show, Matsuoka Hamburger, which solidified a mentor-mentee-like relationship between the two. This collaboration has brought him increased recognition among fans of the radio program and the wider voice acting community. Known for his diligent and cheerful attitude, Yamane is regarded as a steadily rising talent who continues to expand his presence across various media.