Alan Reid, born in 1950 in Glasgow, is a Scottish folk multi-instrumentalist and songwriter best known as the longest-serving founding member of the Battlefield Band. He joined the group in 1969 and remained its keyboard player and central figure for over four decades until 2010, helping establish the band as a leading force in Scottish traditional music through more than 30 albums and pioneering the innovative use of keyboards (starting with a pump organ) in a Celtic folk context.

While still with Battlefield Band, Reid began solo and duo projects, releasing his first solo album The Sunlit Eye in 1997, a songbook in 2001, and forming a successful duo with singer/guitarist Rob van Sante that produced five albums between 2002 and 2017, including concept works on historical figures.

After leaving Battlefield Band at the end of 2010 to focus on his own writing and collaborations, Reid continued touring internationally with the duo until around 2020, when the COVID-19 pandemic led him to embark on a solo career. Throughout his career, he has been recognised as a prolific songwriter known for evocative storytelling, memorable melodies, and blending traditional Celtic elements with new original material.