Abigail Adams Smith, nicknamed "Nabby", was a daughter of Abigail and John Adams, founding father and second President of the United States, and the older sister of John Quincy Adams, sixth President of the United States. She was named for her mother.

Abigail Adams was the wife and closest advisor of John Adams, the second president of the United States, and the mother of John Quincy Adams, the sixth president of the United States. She was a founder of the United States, and was both the first second lady and second first lady of the United States, although such titles were not used at the time. She and Barbara Bush are the only two women in American history who were both married to a U.S. president and the mother of a U.S. president.