Hiroaki Iwanaga (岩永 洋昭 Iwanaga Hiroaki), born November 23, 1979, in Hasami, Higashisonogi District, Nagasaki Prefecture, is a Japanese model, actor, and voice actor affiliated with Office Junior. He has performed various roles in toku shows such as Kamen Rider, and has provided the voice of Guts in all adaptations of Berserk since the first movie was released in 2012.
- Akira Date/Kamen Rider Birth in Kamen Rider OOO, Kamen Rider OOO Wonderful The Shogun And The 21 Core Medals, and Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max, Kamen Rider Zi-O NEXT TIME: Geiz, Majesty;
- Eiji Ishiguro in Tomica Hero Rescue Force and Tomica Hero Rescue Fire;
- Guts (voice) in Berserk: The Golden Age Arc, Berserk (2016), and Berserk and the Band of the Hawk; (succeeding Nobutoshi Canna)
- Kaicho Noshikai in the Moyashimon anime;
- Kamen Rider Birth (voice) in OOO, Den-O, All Riders: Let's Go Kamen Riders;
- Kamen Rider Birth Prototype (voice) in Kamen Rider × Super Sentai: Super Hero Taisen;
- Nobunaga in Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle;
- Mr. Rei in Doubutsu Sentai Zyuohger;
- Space Sheriff Shaider in Space Sheriff Gavan, and his voice in Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z;
- Takeda Shingen (voice) in the Sengoku Basara anime.