Roy Murdoch Buchanan Williamson was a Scottish songwriter and folk musician, most notably with The Corries. Williamson is best known for writing "Flower of Scotland", which has become the de facto national anthem of Scotland used at international sporting events.

"Flower of Scotland" is commonly used as the unofficial national anthem of Scotland. It was written sometime in the mid-1960s by folk musician Roy Williamson, and its lyrics focus primarily on the Wars of Scottish independence and Robert the Bruce, where it refers to Robert the Bruce, who was King of Scots, secured victory over Edward II, King of England, during the Battle of Bannockburn in 1314. The song's basic theme is said to "protect the country and sending the English King home to think twice about invading Scotland again".