Demacio Castellon is American-Cuban audio engineer. He married with singer Nelly Furtado between 2008-2016. They were secretly split from each other.

Born: June 6, 1978 (age 42 years)
Spouse: Nelly Furtado (m. 2008–2016)
Awards: Latin Grammy Award for Best Female Pop Vocal Album
Nominations: Grammy Award for Best Dance Recording