Leslie Gene Osterman (July 29, 1947 – February 18, 2021) was a health systems analyst from Wichita, Kansas, who was a Republican member of the Kansas House of Representatives from District 97 in southwestern Wichita County. First elected on November 2, 2010, Osterman lost races for the same seat in 2000 and 2008, when he ran each time as a Democrat.