List of sister cities in Ohio

This is a list of sister states, regions, and cities in the U.S. state of Ohio. Sister cities, known in Europe as town twins, are municipalities (sometimes counties, regions, states and other sub-national entities) that cooperate to foster cultural links. They interact with each other across a broad range of activities, often including education, business, the arts, or health care.

Many Ohio jurisdictions work with foreign cities through Sister Cities International, an organization whose goal is to "Promote peace through mutual respect, understanding, and cooperation."