Iowa Highway 191 (Iowa 191) is a highway in western Iowa. It runs for 22.65 miles (36.45 km) in a north–south direction. For its entire length, Iowa 191 closely parallels Mosquito Creek and a line of the BNSF Railway. Iowa 191 begins at Interstate 880 north of Neola and ends at Iowa Highway 37 in Earling. Previously, it began at U.S. Highway 6 in Council Bluffs until 1981, and the city limits of Council Bluffs until July 1, 2003. This old segment of highway ran through Underwood and Neola, and is now Pottawattamie County Road G8L.