ABC 2000 Today was ABC News' special programming covering the new millennium celebrations around the world from December 31, 1999, into January 1, 2000, as part of the 2000 Today programming in the United States. Peter Jennings anchored the 23 hours and 10 minutes of broadcast from Times Square Studios in Manhattan, New York. ABC temporarily converted the Good Morning America marquee broadcast studio into a type of "millennium command center" that included a desk, where a standing Jennings spent most of his time, two lounge chairs, where Jennings would interview guests, a large screen with a time-zone included map of the world, a wall of clocks, and a makeshift newsroom where ABC News staffers would follow the latest developments.

2000 Today was an internationally broadcast television special to commemorate the beginning of the Year 2000. This program included New Year's Eve celebrations, musical performances, and other features from participating nations.