Bay is a city in Craighead County, Arkansas, United States. The population was 1,876 at the 2020 census. It is included in the Jonesboro Metropolitan Statistical Area.
Bay is located in the Arkansas Delta at (35.745157, -90.562777). According to the United States Census Bureau, the city has a total area of , all land.
Ecologically, Bay is located within the St. Francis Lowlands ecoregion within the larger Mississippi Alluvial Plain. The St. Francis Lowlands are a flat region mostly covered with row crop agriculture today, though also containing sand blows and sunken lands remaining from the 1811–12 New Madrid earthquakes. Waterways have mostly been channelized, causing loss of aquatic and riparian wildlife habitat. The St. Francis Sunken Lands Wildlife Management Area, which preserves some of the bottomland hardwood forest typical of this ecoregion prior to development for row agriculture lies east of Bay along the St. Francis River.
Located at 3