Sigurd Verdal (4 June 1927, Eiken – 27 August 2010) was a Norwegian politician for the Labour Party.
He was elected to the Norwegian Parliament from Vest-Agder in 1981, and was re-elected on two occasions.
He had previously served in the position of deputy representative during the terms 1973–1977 and 1977–1981.
Verdal was a member of Audnedal municipality council in the periods 1969–1971 and 1971–1973.
In 1969–1971 he was also a member of Vest-Agder county council.