Ronald 'Ronnie' Leahy (born 4 October 1947, in Glasgow, Strathclyde, Scotland) is a keyboard player best known for his work with Jack Bruce, Jon Anderson, and Nazareth (1998–2002, when Leahy retired from touring). He first gained recognition as keyboardist in the second line-up of Scottish band Stone the Crows. He also played in White Trash.
In the early 1980s, Leahy was a member of The New Life Band that accompanied Jon Anderson on a European tour and recorded Song of Seven (1980). Ronnie Leahy currently plays with Scottish-based blues band Dr. Hip and the Blues Operation.