Daniel Fredrick is an American actor recognized for his voice work in anime, most notably providing the English dub voice for the character Grell Sutcliff in the Black Butler franchise. He is a Philadelphia-based performer with extensive experience in regional theatre across the United States.

Fredrick's most prominent anime voice role is Grell Sutcliff in the English language adaptation of Black Butler. He voiced the character in the television series Black Butler: His Butler, Performer and the animated film Black Butler: Book of the Atlantic. In Book of the Atlantic, he was part of a principal cast that included J. Michael Tatum as Sebastian Michaelis and Brina Palencia as Ciel Phantomhive.

Before his work in anime, Fredrick built a career as a stage actor. Originally from Kansas City, he earned a Bachelor of Fine Arts in Acting from Texas Christian University. His stage work has been extensive in regional theatre, with favorite productions including works by Shakespeare such as Hamlet, Othello, and A Midsummer Night's Dream, performed with companies like the Heart of America Shakespeare Festival and Trinity Shakespeare Festival. He also appeared in contemporary plays and comedies with theatre companies in Philadelphia and the Dallas–Fort Worth metroplex.

His casting as the voice of Grell Sutcliff in a major anime franchise represents a notable crossover from his foundation in classical and regional theatre. A significant career achievement came in 2023 when he joined the Broadway company of Harry Potter and the Cursed Child, taking on the role of Ron Weasley at New York's Lyric Theatre. He had been involved with the production for six years prior as an audition reader. His career trajectory reflects a path through regional theatre that ultimately led to prominent roles in both anime dubbing and major stage productions.