Yoshiki Nakajima is a Japanese voice actor and singer affiliated with the agency 81 Produce. He was born in Yokohama, Kanagawa Prefecture, on June 26, 1993. Nakajima graduated from the Voice Actor Department of Yoyogi Animation School in Yokohama before completing the vocal training program at 81 Produce's affiliated school. He officially became a member of 81 Produce in April 2012.

His early career involved voicing numerous minor and supporting characters in a wide range of anime series, building a foundation of experience throughout the 2010s. His first major leading role came in 2018 when he was cast as the protagonist Yoshifumi Nitta in the television anime series Hinamatsuri. For this role, he also performed the series' ending theme song, "Sake to Ikura to 893 to Musume".

Nakajima is known for his versatility across various anime genres. He has taken on leading roles such as Licht Bach and Rihito Sakai in Plunderer, Oscar in Unnamed Memory, and Simon in I Left My A-Rank Party to Help My Former Students Reach the Dungeon Depths!. He also plays prominent supporting characters, including Shun Aoi in Aoashi, Yō Uei in the Dr. Stone franchise, Cyril in She Professed Herself Pupil of the Wise Man, and Suzuri in Malevolent Spirits: Mononogatari.

He is particularly active in franchise and multimedia projects, often voicing characters in adaptations of popular games. Notable examples include his roles as Jiro Yamashita in The Idolmaster: SideM, Tetora Nagumo in Ensemble Stars!, and Shōgo Yamato in the Paradox Live project. Other significant roles from his extensive filmography include Seimei in Bakumatsu, Maoto Tsujidō in UniteUp!, Kōya Kirishima in Stand My Heroes: Piece of Truth, Yūgo Ōkami in My Roommate is a Cat, Serge Tova in Fairy gone, Seiichirō Nade in Try Knights, Masaki Amakasu in Orient, Nalu Tanaka in WAVE!! -Let's go surfing!!, Cislo in The Promised Neverland, Jin Hazama in The Relative Worlds, Bukkororii in KONOSUBA - God's Blessing on This Wonderful World! Legend of Crimson, Makoto Midorikawa in Ingress, Karuna in Gundam Build Divers, Yamato Higa in Sweet Punishment - I'm the Guard's Personal Pet -, Loyd in The Most Notorious "Talker" Runs the World's Greatest Clan, and Mohican Dot in Egumi Legacy.

Beyond voice acting, Nakajima is also a musician. He is a member of the musical unit UMake with fellow voice actor Kent Itō. Additionally, he provides vocals and plays guitar for the band Sir Vanity, which he formed with voice actor Yuichiro Umehara and two other musicians. He is also involved in stage production as a member of the theater company "Hatsukoi Kikaku," where he works not only as an actor but also as a scriptwriter and director. His work in dubbing includes providing the Japanese voice for actor Park Solomon (Lomon) in the Korean dramas All of Us Are Dead and Revenge of Others.