List of Americans who held noble titles from other countries explained

This is a list of American citizens who have held titles of nobility from other countries. Nobility is not granted by the United States itself under the Title of Nobility Clause of the Constitution.

Prince/Princess

Duke/Duchess

Marquis/Marquise

Count/Countess

Viscount/Viscountess

Baron/Baroness

Hereditary Knight

Lord/Lady (Untitled)