Gwinner is a city in Sargent County, North Dakota, United States.

According to the United States Census Bureau, the city has a total area of 2.08 square miles (5.39 km2), all land.

There were 370 housing units at an average density of 177.9 per square mile (68.7/km2).

31.7% of all households were made up of individuals, and 9.4% had someone living alone who was 65 years of age or older.

26.8% of all households were made up of individuals, and 9.1% had someone living alone who was 65 years of age or older.

Gwinner is the site of a manufacturing facility of Bobcat Company and was once the location of its American headquarters.

It is one of the largest employers in North Dakota and provides economic stability to Gwinner and the entire region.