| Intro | Norwegian politician |
| Was | Politician |
| From | Norway |
| Type | Politics |
| Gender | male |
| Birth | 7 January 1909 |
| Death |
18 November 1974 (aged 65 years) |
| Star sign | Capricorn |
| Politics | Norwegian Labour Party |
Gunnar Mykstu (7 January 1909 – 18 November 1974) was a Norwegian politician for the Labour Party.
He was elected to the Norwegian Parliament from Buskerud in 1958, and was re-elected on one occasion. He had previously served as a deputy representative in the periods 1950–1953 and 1954–1957.
Mykstu was born in Rollag and was involved in local politics in Rollag municipality between 1934–1940 and 1947–1955.