Yūki Tamai is a Japanese voice actor affiliated with the agency I'm Enterprise. He was born on April 10 in Ehime Prefecture, Japan, and is a graduate of the Japan Narration Acting Institute. Tamai has been active as a voice actor since the 2010s and officially became a member of I'm Enterprise in 2019.

Tamai has built a career characterized by a steady stream of supporting roles across a wide range of anime series, theatrical films, and video games. He has voiced characters in numerous popular and long-running franchises. In television anime, his roles include Menas Renard in As a Reincarnated Aristocrat, I'll Use My Appraisal Skill, Gallow in The Seven Deadly Sins: Four Knights of the Apocalypse, and Kaoru Akikaze in Mission: Yozakura Family. He also provided the voice for Karara in the series My Daemon and for Anselm Rybrant in Gamera -Rebirth-.

Beyond these credits, his extensive anime work includes guest and recurring roles in series such as The New Gate, The iDOLM@STER Shiny Colors, 'Tis Time for "Torture," Princess, Chained Soldier, The Unwanted Undead Adventurer, A Sign of Affection, Delicious in Dungeon, Shangri-La Frontier, The Rising of the Shield Hero, The Eminence in Shadow, and Mob Psycho 100.

Tamai has also contributed to several notable anime films. He voiced a character in the theatrical film ARIA The CREPUSCOLO, as well as roles in Sword Art Online the Movie -Progressive-: Scherzo of Deep Night, the Overlord: The Sacred Kingdom film, and the Chainsaw Man recap film. His work in video games includes roles in major titles such as Granblue Fantasy, Dragon Quest Monsters 3: The Demon Prince and the Elf’s Journey, and Romancing SaGa 2. Beyond animation and games, he is also active in the Japanese dubbing of foreign films and television series.

Outside of his professional work, Tamai has listed his interests as reading, watching movies, and playing basketball. His special skill is making funny faces, and he holds a standard driver's license.