Washington's Birthday is a national holiday in the United States of America commemorating the birth of the nation's first president, George Washington. Celebrated on the third Monday of February, the holiday provides an opportunity for Americans to honor and reflect on the significant contributions made by George Washington in shaping the United States of America. Officially established by an act of Congress in 1879, it was the first federal holiday to honor an American citizen.

In the state of Washington, abbreviated as WA, the holiday holds special significance. Washington received its name as a dedication to the first American president, so the state has a strong historical connection to the event. Besides being a public holiday, many businesses, schools and offices are closed on this day. Parades, reenactments, and other public events commonly take place in various parts of the state in acknowledgment of George Washington's contributions to the nation.

Despite its specific reference to George Washington, the holiday has come to honor all past presidents of the United States more broadly, often referred to as 'Presidents' Day'. However, the official title of the holiday remains Washington's Birthday according to the federal government. On this day, the American flag is flown at half mast. Notably, while it is a federal holiday celebrated nationwide, many states have their specific traditions and observances.