John "Johnny" McDaid (born 24 July 1976), is a Northern Irish songwriter, musician, producer, engineer and recording artist from Londonderry. The son of John (died 2011) and Pauline McDaid, he attended St Bridget's Primary School, Carnhill, and St Columb's College. He plays piano, guitar and sings backing vocals in the alternative rock band Snow Patrol.

McDaid was formerly the singer and songwriter of the band Vega4, whose second album You and Others was produced by Jacknife Lee. Their first single release "Life Is Beautiful" was featured on the US Hot Adult Contemporary Radio Charts Top 40 for 12 weeks in 2007, and was the song used for the theatrical trailer of My Sister's Keeper. In 2009, McDaid was the first person to sign to Snow Patrol's publishing company, Polar Patrol Publishing.