C.D. Davidsmeyer (born 1979) is a member of the Illinois House of Representatives who has served in the Illinois House of Representatives since his appointment in December 2012. He represents the 100th district which includes all or parts of Calhoun County, Greene County, Jersey County, Macoupin County, Madison County, Morgan County, Pike County, Sangamon County and Scott County. As of July 3rd, 2022, Representative Davidsmeyer is a member of the following Illinois House committees: