Justin Gross is an American voice actor known for his work in anime, animation, and video games. Born in Los Angeles, California, he graduated from Sonoma State University and has been active in the voice acting industry since 1997. He currently resides in Grass Valley, California, where he operates from a home-based studio.

In the realm of anime, Gross has provided voices for numerous English-language dubs. His credits from the early 2000s include the role of Jack in the OVA series Spirit of Wonder Scientific Boys Club. He also voiced Chief Engineer Curtis Lawson in both the original OVA series Starship Girl Yamamoto Yohko and its sequel, Starship Girl Yamamoto Yohko II. Additional notable anime roles include Ichise in Texhnolyze, Yuta in Mermaid Forest, and Mario Yodogawa in Strawberry Eggs. He also appeared in series such as DearS, Ikki Tousen, R.O.D -The TV-, NieA Under 7, Paranoia Agent, and Angel Tales.

Beyond anime, Gross is perhaps best recognized for his iconic roles in Western animation and video games. He is widely known as the voice of Arthas Menethil in the landmark video game Warcraft III: Reign of Chaos and its expansion The Frozen Throne, a role he reprised in the 2020 remaster Warcraft III: Reforged. He also voiced Ryu Hayabusa in the Ninja Gaiden video game series and provided the voice of Steve Rogers / Captain America in the animated films Ultimate Avengers and Ultimate Avengers 2: Rise of the Panther. His extensive career also encompasses thousands of other projects, including television and radio commercials, narrations, and promotional work.