Kouki Uchiyama is a Japanese voice actor. He appeared in the films Fate/Grand Order the Movie: Divine Realm of the Round Table - Camelot - Wandering Agateram and its sequel Fate/Grand Order the MOVIE Divine Realm of the Round Table: Camelot Paladin Agateram. Uchiyama has also voiced characters in the series Rokka Braves of the Six Flowers and in the series Sarazanmai. Additionally, he hosted the podcast 内山昂輝の１クール！.