The National Democratic Alliance (Acción Democratico Nacional) is a political party in Aruba. At the 1985 Aruban general election, the party won 2 of the 21 seats, then won only 1 seat at the 1989 general election and the 1993 general election. They later lost their only seat at the 1994 general election and never gained any again.
The NDA organization collapsed in 1998.