George Watson's College is a co-educational private day school in Scotland, situated on Colinton Road, in the Merchiston area of Edinburgh. It was first established as a hospital school in 1741, became a day school in 1871, and was merged with its sister school George Watson's Ladies College in 1974. It is a Merchant Company of Edinburgh school and a member of the Headmasters' and Headmistresses' Conference.

George Watson was a Scottish accountant and philanthropist. He was the Bank of Scotland's first Chief Accountant. He bequeathed money that was used to establish George Watson's College and fund George Heriot's School.