Carl Julius Alvin Westerlund (2 June 1885 - 14 May 1952) was a Norwegian politician for the Labour Party.
He was born in Bodø.
He was elected to the Norwegian Parliament from the Market towns of Vest-Agder and Rogaland counties in 1945, but was not re-elected in 1949. He had previously served in the position of deputy representative during the term 1925 - 1927.
Westerlund held various positions in Haugesund city council from 1913 to 1940, serving as mayor in 1919 and 1922.