Oak Harbor is a village in Ottawa County, Ohio, United States.

Oak Harbor is 30 miles (48 km) east of Toledo.

[4] The Portage River flows through Oak Harbor on its way to Lake Erie at Port Clinton.

As of the census of 2010, there were 2,759 people, 1,153 households, and 738 families residing in the village.

[7] Oak Harbor is home to the annual Apple Festival which is held in early October.