Presidents' Day, officially Washington's Birthday at the federal governmental level, is a holiday in the United States celebrated on the third Monday of February. It is often celebrated to honor all those who served as presidents of the United States and, since 1879, has been the federal holiday honoring Founding Father George Washington, who led the Continental Army to victory in the American Revolutionary War, presided at the Constitutional Convention of 1787, and served as the first U.S. president from 1789 to 1797.

The day is an official state holiday in most states under various names. Depending upon the specific law, the state holiday may officially celebrate Washington alone, Washington and Abraham Lincoln, or some other combination of U.S. presidents (such as Washington and Thomas Jefferson, who was born in April)