Grand Kru County is a county in the southeastern portion of the West African nation of Liberia. One of 15 counties that comprise the first-level of administrative division in the nation, it has eighteen districts. Created in 1984, Barclayville serves as the capital with the area of the county measuring . As of the 2008 Census, it had a population of 57,106, making it the least populous county in Liberia.
Grand Kru's County Superintendent is Rosalind Sneh. The county is bordered by River Gee County to the northeast, Sinoe County to the northwest, and Maryland County to the southeast. The southern part of Grand Kru borders the Atlantic Ocean.