List of battles fought in Ohio

This is an incomplete list of military confrontations that have occurred within the boundaries of the modern US State of Ohio since European contact. The region was part of New France from 1679–1763, ruled by Great Britain from 1763–1783, and part of the United States of America 1783–present.

Several wars that have directly affected the region including the French and Indian War (1754–1763), American Revolutionary War (1775–1783), Northwest Indian War (1785–1795), Tecumseh's War (1811–1812), War of 1812 (1812–1814), and the American Civil War (1860–1865).