2000 Plus, also known as Two Thousand Plus and 2000+, was an American old-time radio series that aired on the Mutual Broadcasting System from March 15, 1950, to January 2, 1952. As the first adult science fiction series on radio, it predated the popular Dimension X series by a month. Created by Sherman H. Dryer and Robert Weenolsen, 2000 Plus was an anthology program that featured all-new material rather than adapting published stories.

The show explored exciting tales of future technology, with a focus on space exploration and alien invasions. At the same time, it often reflected contemporary anxieties about the dangers of technology. The series featured a talented cast, including Lon Clark, Joseph Julian, Bryna Raeburn, Bill Keene, and Amzie Strickland, with music composed by Elliott Jacoby and conducted by Emerson Buckley. Ken Marvin served as the announcer, and Adrian Penner handled the sound effects.

Some notable episodes include "The Brooklyn Brain," "The Flying Saucers," "The Robot Killer," "A Veteran Comes Home," and "Men from Mars." In total, 32 episodes are known, with only up to 15 surviving today. The series was praised for its charm and intense music and acting, reflecting the post-WWII atomic and Cold War eras.