Plain Dealing is a town in Bossier Parish, Louisiana, United States.

Prior to 1839, the United States government forcibly removed the Caddo Nation of Native Americans—longtime local inhabitants who had first settled the area over 1,000 years before Europeans' 16th-century arrival in mainland North America—from the area of Northern Louisiana that included the parcel that would later become the town of Plain Dealing.

[4] In 1839, George Oglethorpe Gilmer and his son, James Blair Gilmer, bought 5,000 acres of this land—then described as a "vast, unsettled wilderness"—from the United States government, calling a portion of this acreage "Plain Dealing" after the family's Virginia plantation.

[9] As of the 2020 United States census, there were 893 people, 424 households, and 192 families residing in the town.

[15] White and black students had separate K-12 schools, under educational segregation in the United States.