The sovereign country located entirely on the island of Barbados is Barbados.
Barbados is both the name of the island and the independent country that occupies it. The island lies at the eastern edge of the Lesser Antilles, east of the main volcanic arc, and has a population concentrated around its coastal and urban areas.
Its capital is Bridgetown, and the country became independent from the United Kingdom in 1966. Barbados is a parliamentary republic and remains a member of the Commonwealth.
Barbados is sometimes grouped with island countries such as Saint Lucia or Grenada, but those countries occupy different islands. The name therefore provides a straightforward geographic and political match: the island of Barbados is the territory of the country of Barbados.