Mellwood is an unincorporated community and census-designated place in Phillips County, Arkansas, United States. Mellwood is located on Arkansas Highway 44, 8.5 miles southwest of Elaine. Mellwood has a post office with ZIP code 72367. It was first listed as a CDP in the 2020 census with a population of 21. The lynching of Owen Flemming occurred near Mellwood on June 8, 1927.