Termonbarry, officially known as Tarmonbarry, is a village located in County Roscommon, Ireland. It is situated on the River Shannon and serves as a point where the N5 road crosses the river. Due to its location on the waterway, part of the village lies in County Longford, just east of the bridge.
The village is situated within a civil parish of the same name and sits approximately 8 km west of Longford town. According to census data, the population grew from 443 in 2016 to 699 by 2022.