Saint Vincent and the Grenadines (Wikipedia) Saint Vincent and the Grenadines (/ˌɡrɛnəˈdiːnz/ GREH-nə-DEENZ) is an island country in the eastern Caribbean. It is located in the southeast Windward Islands of the Lesser Antilles, which lie in the West Indies, at the southern end of the eastern border of the Caribbean Sea, where the latter meets the Atlantic Ocean.