Strathclyde, the former local government region of Scotland, 1973 to 1996, which served as a police force area and fire service area until 2013, and is still a transport authority area, covered by:
Strathclyde Partnership for Transport (formerly Greater Glasgow Passenger Transport Executive, Strathclyde Passenger Transport Executive and Strathclyde Passenger Transport Authority)
The Kingdom of Strathclyde, the ancient Brythonic kingdom which included most of the area of the former local government region
Other things in Scotland with Strathclyde in their names include: