Iowa Highway 6

Iowa Highway 6 may refer to one of the following highways:
 * US 6.svg U.S. Route 6
 * Iowa Primary 6.svg Iowa Primary Road No. 6, now part of US 30
 * Iowa 6 1926.svg Iowa Highway 6 (1926–1931), became Iowa Highway 60 (renumbered as Iowa 5 and Iowa 17)