is a county in Norway bordering Sør-Trøndelag Oppland and Akershus. The county administration is in Hamar. Hedmark makes up the northeastern part of Østlandet the southeastern part of the country. It includes a long part of the borderline with Sweden Dalarna County and Värmland County. The largest lakes are Femunden and Mjøsa. It also includes parts of Glomma.