The Royal Town Planning Institute

• Corporate body
• 1914-

The Sail Training Association

The Saint Line Ltd

The Scotsman

The Scott Lithgow Group

The Scottish Office, UK Government.

• Corporate body
• 1885-1999

The Seamless Steel Boat Company Ltd

The Sevcon Venture

• Corporate body
• 1960-1974

The Sewanee Review.

• Corporate body
• 1892-

The Sheaf Steam Shipping Company Ltd