Jon B. Erpenbach (born January 28, 1961) is an American politician currently serving as chairman of the Wisconsin Parole Commission in the administration of Governor Tony Evers.

He subsequently worked in both the State Assembly and Senate in media relations and as communications director.

[citation needed] The achievement that Senator Erpenbach is most well known for is his extremely successful and popular Do Not Call legislation, passed and signed into law in 2001.

[clarification needed] [3] Erpenbach authored the Traveling Sales Crew Regulation bill, also known as Malinda's Law, which would give traveling sales crew members similar employment rights that part-time workers in Wisconsin are currently guaranteed by state law.

[4] Erpenbach did not seek reelection to the Senate in 2022 and on January 13, 2023 was appointed chairman of the Wisconsin Parole Commission by Governor Tony Evers, a fellow Democrat.