IOGT was established in Sweden in 1879, when the first local chapter was started in Klippan, and was then called Godtemplarorden.
In 1888, a group of people left Godtemplarorden to form another temperance order, Nationalgodtemplarorden.
The latter group was merged with the Templarorden [sv], a Swedish branch of the American organisation Templars of Temperance, in 1922, to form the NTO.
The organisation also offers a variety of study circles in various subjects, which are open to non-members.
[1] The youth organisation affiliated with IOGT-NTO is Ungdomens Nykterhetsförbund, which as of 2007 had 125 local clubs.