Masaaki Ishikawa is a Japanese voice actor born on January 27, 1975, in Nasukarasuyama, Tochigi Prefecture, Japan. He is known for a career that began in the 1990s, during which he has provided voices for a variety of anime series, video games, and drama CDs. He is a graduate of the Yoyogi Animation Academy and has previously been affiliated with the agencies Ark Production and ONE UP. Currently, Ishikawa works as a freelance voice actor.

Ishikawa is recognized for his energetic and youthful vocal quality, which he has brought to a wide range of supporting and lead roles. Among his most notable television anime roles is Kentaro Minami in the long-running sports series The Prince of Tennis. He also voiced multiple characters in the soccer anime Whistle!, including Seiya Amane, Ryoichi Amagi, and Yuichiro Sakuraba. His other significant anime work includes the role of Trailmon in Digimon Frontier, Amada Musashi in Kodomo no Omocha, and Charles in the Japanese version of the children's series Rugrats. He has also appeared in supporting capacities in popular series such as Hunter x Hunter (1999), Gun Frontier, Dear Boys, and Papuwa.

In addition to his television work, Ishikawa has voiced characters in original video animations and theatrical films. He reprised his role as Kentaro Minami for the film The Prince of Tennis: Atobe's Gift. As the user specified, he also played the role of Seiku Arai in the two-part OVA series Rurouni Kenshin: New Kyoto Arc, released in 2011 and 2012. Furthermore, he provided the voice for Shin Kurosaki in the 2006 television series Soul Link.

Beyond animation, Ishikawa has contributed his voice to several video games, particularly those based on anime franchises such as The Prince of Tennis and Whistle!. He has also been active in the production of drama CDs.