Gerrit Joseph Radstaak (September 4, 1914 – May 1, 1996) was a politician from Alberta, Canada.
He served in the Legislative Assembly of Alberta from 1967 to 1971 as a member of the Social Credit Party.
Radstaak first ran for a seat in the 1967 Alberta general election as the Social Credit candidate in the new electoral district of Strathcona South.
[3] Strathcona South was abolished in the 1971 boundary redistribution, and Radstaak ran for re-election in the new electoral district of Edmonton-Avonmore in the election held that year.
[4] Radstaak ran again in the 1975 general election and was again defeated by Schmid in a landslide.