Black Oak, Arkansas can refer to one of two unincorporated communities

Unincorporated area

In law, an unincorporated area is a region of land that is not a part of any municipality.To "incorporate" in this context means to form a municipal corporation, a city, town, or village with its own government. An unincorporated community is usually not subject to or taxed by a municipal government...

 in Washington County, Arkansas. One is in White River Township, Washington County

Washington County, Arkansas

Washington County is a county located in the northwest part of the U.S. state of Arkansas. As of 2010, the population was 203,065. The county seat is Fayetteville. Washington County is Arkansas's 17th county, formed on October 17, 1828, and named for George Washington, the first President of the...

, Arkansas

Arkansas

Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is located between Greenland

Greenland, Arkansas

Greenland is a city in Washington County, Arkansas, United States. The population was 907 at the 2000 census. It is part of the Fayetteville–Springdale–Rogers, AR-MO Metropolitan Statistical Area.-Geography:...

 and Elkins

Elkins, Arkansas

Elkins is a city in Washington County, Arkansas, United States. The population was 1,251 at the 2000 census. It is part of the Fayetteville–Springdale–Rogers, AR-MO Metropolitan Statistical Area.-Geography:...

. The community contains the Black Oak Cemetery, listed on the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

. The other Black Oak community, and the accompanying Black Oak Cemetery, is located on County Road 108 (Black Oak Road) east of Winslow, Arkansas.