Alles Door Oefening Den Haag, commonly known as ADO Den Haag are a Dutch Association Football Club from the city of The Hague. The club has operated under several names over the years and were once known as FC Den Haag. They have a big rivalry in Dutch football with Ajax and Feyenoord.
The club have won 2 league championships, 2 KNVB Cups and also finished runners up in the league 3 times as well as the cup a further 6 times.
In 1967, the club did actually play in the North American United Soccer Association competition, playing a season under the name the San Francisco Golden Gales, finishing as runner-up during this campaign.