Motoki Sakuma is a Japanese voice actor from Niigata Prefecture, born on December 17. He is affiliated with the talent agency Kenyu Office. Sakuma is a graduate of the International Media Institute and the Video Technology Academy.

He is known for a wide range of supporting roles in anime television series. A notable recent role is Hans Reiheit in the 2021 adaptation of Shaman King. His career is marked by a high volume of performances, often playing soldiers, officials, townspeople, and other background characters in many popular long-running series.

Sakuma has had recurring roles in several major franchises. He has appeared in multiple installments of Kingdom, voicing various characters across its third, fourth, and fifth seasons. He is also a frequent presence in the long-running series Spy x Family, where he has voiced numerous minor characters including politicians, teachers, and the Bondman commander. His other extensive credits include roles in the various seasons of Attack on Titan, My Hero Academia, and the numerous films and episodes of the Detective Conan franchise.

His profile includes recurring collaborations across many different animation studios and production committees. Sakuma has also provided voices for video games, including Fallout 4, Yakuza: Like a Dragon, and Fairy Tail. In addition to anime, his work includes dubbing foreign content, such as providing a voice for the Japanese dub of the series The Witcher.

His personal interests include muscle training and survival games.