In 1966, Supertest sponsored the first Canadian tournament for the Ladies Professional Golf Association, the Supertest Ladies Open, at the Sunningdale Golf Club in London.
Australian Open | French Open | Open University | open source | Barenaked Ladies | U.S. Open | Wacken Open Air | Ladies' Home Journal | The Open Championship | U.S. Open (tennis) | All England Open Badminton Championships | U.S. Open (golf) | Open Source | Open-pit mining | 2006 Australian Open | Open Software Foundation | Indira Gandhi National Open University | Lamar Hunt U.S. Open Cup | International Ladies' Garment Workers' Union | The No. 1 Ladies' Detective Agency | 2005 Australian Open – Men's Singles | U.S. Women's Open | open access | Gerry Weber Open | Swedish Open | Ladies European Tour | International GT Open | Federal Open Market Committee | Cheltenham Ladies' College | 2014 Australian Open – Men's Singles |