Harrison Cosmo Krikoryan Jarvis (born 1 September 1989) is an American-born British actor, musician, and filmmaker. In 2015, he auditioned and was cast to portray the character of Sebastian in William Oldroyd's debut feature film Lady Macbeth (2016).

Early life
Jarvis was born in Ridgewood, New Jersey, to an Armenian-American mother and English father. He moved to England with his parents as a baby. As a child, he moved to Totnes, Devon, with his mother and younger brother.