Cletus J. Vanderperren (March 4, 1912 – September 24, 1994) was an American farmer and politician. A Democrat, he served 34 years in the Wisconsin State Assembly, representing Green Bay and northern Brown County. At the time of his retirement, he was the longest-serving member in the history of the Wisconsin Assembly. His legislative service earned him the nickname Concrete Clete for his efforts to fund roads, highways, and bridges throughout the state.