Shunsuke Takeuchi (武内駿輔, Takeuchi Shunsuke, born September 12, 1997) is a Japanese voice actor and singer affiliated with 81 Produce. He won the award for Best Rookie Actor at the 10th Seiyu Awards. His roles include Producer in The Idolmaster Cinderella Girls, Alexander Yamato in King of Prism, Juuza Hyoudo in A3!, Revolver in Yu-Gi-Oh! VRAINS, Zack Walker in Astra Lost in Space and Brawler in Akudama Drive.

Takeuchi is part of the musical duo Amadeus with rapper Lotus Juice, performing under the stage name Jack Westwood. He is also credited under the name for his music productions.

He announced his marriage to Misato Kato on September 5, 2022.