The United States never had an organized territory named Ohio Territory. This term may refer to:
- Northwest Territory incorporating what is today the state of Ohio between 1787 and 1803
- Ohio Country, incorporating most of Ohio, the southern peninsula of Michigan, western Pennsylvania and southeastern Indiana prior to 1787
- loosely, the Ohio River Valley in colonial times
- incorrectly or informally, lands within the boundary of the state of Ohio after statehood in 1803
| This disambiguation page lists articles associated with the title Ohio Territory.
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