Gustaf Herman Danielson (1883 – July 1971) was a Canadian provincial politician.
[1] He was elected as the Liberal member of the Legislative Assembly of Saskatchewan for the constituency of Arm River, from 1934 until 1964, serving seven terms.
In 1938, he defeated Conservative leader and future Prime Minister of Canada John Diefenbaker.
As representative of the Arm River riding, he was preceded by Conservative Duncan Selby Hutcheon and followed by the first leader of the Progressive Conservative Party of Saskatchewan, Martin Peder Pederson.
[1] Danielson Provincial Park (located near Saskatchewan's Lake Diefenbaker and Gardiner Dam) was named after him.