The Times Square Ball is a time ball located in New York City's Times Square. Located on the roof of One Times Square, the ball is a prominent part of a New Year's Eve celebration in Times Square commonly referred to as the ball drop, where the ball descends down a specially designed flagpole, beginning at 11:59:00 p.m. ET, and resting at 12:00:00 a.m. to signal the start of the new year.

The event was first organized by then-New York Times owner Adolph Ochs, expanding upon New Year's fireworks displays he held at the building since 1904 to promote its status as the Times' headquarters. The ball itself was designed by sign company Artkraft Strauss, and inspired by the time ball at the Western Union Telegraph Building. First held on December 31, 1907, to welcome 1908, the ball drop has been held annually since, except in 1942 and 1943 in observance of wartime blackouts during World War II.

The ball has been updated seven times to reflect improvements in lighting technology: the original ball was 5 feet (1.5 m) in diameter, constructed from wood and iron, and illuminated with 100 incandescent light bulbs. By contrast, the sixth iteration of the ball contained over 32,000 LEDs, and the seventh iteration which debuted for 2025–26 is 12.5 feet (3.8 m) in diameter. Since 1999–2000, the ball has typically featured an outer surface consisting of crystal panels manufactured by Waterford Crystal, which contain inscriptions and designs representing a yearly theme; the current ball contains over 5,000 circular panels of varying sizes.

Times Square Ball
Jtalvy · CC0 via Wikimedia Commons

The ball itself has remained atop One Times Square nearly year-round since 2009; as part of a renovation of One Times Square, the ball became accessible to the public in November 2025 as part of a new observation deck attraction, with visitors also able to purchase outgoing crystals from the ball as keepsakes.

The prevalence of the Times Square ball drop has inspired similar "drops" at other local New Year's Eve events across the country; while some use balls, some instead drop objects that represent local or . In observance of the United States' semiquincentennial, a special one-off edition of the event is planned for July 3, 2026, with eight ball drops counting down to midnight in each time zone of the United States on Independence Day—marking the first time it will be officially held outside of New Year's Eve.