Armenian Americans (Armenian: Ամերիկահայեր Amerikahayer) are citizens of the United States of Armenian descent or origin. Their number is estimated to be up to 1,400,000. The 2010 American Community Survey one-year estimates indicated 474,559 Americans with full or partial Armenian ancestry.

The largest concentration of Armenian-Americans is in the Greater Los Angeles area, where 166,498 people have identified themselves as Armenian during the US 2000 Census, which was about 43.2% of the total number (385,488) of people with Armenian origin in the United States in 2000.

The first Armenian known to have immigrated to America was Martin the Armenian. He arrived in Jamestown, Virginia, in 1618, when the colony was only eleven years old. A few other Armenians are recorded as having come to the United States in the seventeenth and eighteenth centuries, but they mostly came as individuals and did not form a community. A number of Armenians were known to have served for the side of the Union during the Civil War. Three Armenian doctors, Simeon Minasian, Garabed Galstian, and Baronig Matevosian, worked at military hospitals in Philadelphia. The only Armenian known to have participated in hostilities was Khachadour Paul Garabedian, who enlisted in the Union Navy. A naturalized citizen who hailed from Rodosto, Garabedian served aboard the blockade ships USS Geranium and USS Grand Gulf as a Third Assistant Engineer (and later attained officer rank) from 1864 until his honorable discharge from the Navy in August 1865.

Samantha Power (born September 21, 1970) is an Irish American academic, governmental official and writer. She is currently a Special Assistant to President Barack Obama and runs the Office of Multilateral Affairs and Human Rights as Senior Director of Multilateral Affairs on the Staff of the National Security Council. She is also the Founding Executive Director and the Anna Lindh Professor of Practice of Global Leadership and Public Policy of the Carr Center for Human Rights Policy at Harvard University's Kennedy School of Government.

Power began her career by covering the Yugoslav Wars as a journalist, and was a winner of the Pulitzer Prize for her book A Problem from Hell, a study of the U.S. foreign policy response to genocide. She was originally a senior adviser to Obama until March 2008 when she resigned from his presidential campaign under controversy. After rejoining the Obama State Department transition team in late November 2008, she was named to her position in the new administration. Power is considered to be perhaps the key figure within the Obama administration in persuading the president to intervene militarily in Libya.