Jeff Irwin (born June 19, 1977) is an American activist, progressive and politician serving as a member of the Michigan Senate. A member of the Democratic Party, he served on the Washtenaw County Board of Commissioners from 1999 to 2010, and in the Michigan House of Representatives from 2011 to 2017.
From 2019 to 2022, in the Michigan Senate, he represented the 18th Senate district, which encompassed the cities of Ann Arbor, Saline, Ypsilanti, and Milan (portion) and the townships of Ann Arbor, Pittsfield, York, Augusta, Salem, Superior, and Ypsilanti.
