Nicholas Dominick Ryan (born 1949) is an Irish music producer, recording engineer, and manager. He is best known as the longtime business and recording partner for the singer, songwriter and musician Enya alongside his wife, poet and lyricist Roma Ryan. Born and raised in Dublin, Ryan gained initial recognition in the 1970s and 1980s for his work with several artists including Gary Moore, Planxty, Christy Moore and Clannad.