List of former state routes in Ohio

Typical highway markers
System information
Formed	1912, renumbered in 1923, 1927, 1962
Highway names
State	State Route nn (SR nn)
System links
Ohio Highways Interstate U.S. State Scenic

List of former state routes in Ohio (1–49)

List of former state routes in Ohio (50–130)

List of former state routes in Ohio (142–219)

List of former state routes in Ohio (223–270)

List of former state routes in Ohio (271–352)

List of former state routes in Ohio (354–568)

List of former state routes in Ohio (569–673)

List of former state routes in Ohio (675–824)