Widener is a town in St. Francis County, Arkansas, United States.

According to the United States Census Bureau, the town has a total area of 1.3 km2 (0.5 mi2), all land.

As of the 2020 United States census, there were 212 people, 90 households, and 58 families residing in the town.

The racial makeup of the town was 31.94% White, 67.16% Black or African American, 0.30% Asian, 0.60% from other races.

20.7% of all households were made up of individuals, and 6.3% had someone living alone who was 65 years of age or older.