Ousby is a village and civil parish in Eden district, in the English county of Cumbria. It is a Thankful Village, one of 52 parishes in England and Wales that suffered no casualties during World War I. The parish had a population of 362 in 2001, which had increased to 442 at the 2011 Census, and includes the hamlets of Crewgarth, Row, Shire and Townhead. Melmerby parish was absorbed on 1 April 1934, on 1 April 2019 Melmerby became a separate parish again.
Ousby has a pub called the Fox Inn, a camp site and one place of worship, in Townhead, which is called St Luke's Church. A former chapel at Row has now been converted to a holiday home.
Ousby is located in Ousbydale about south of the village of Melmerby, near the A686 road. There is a fell in the Pennines named Ousby Fell.