Alien Worlds was a syndicated radio show that aired 26 half-hour episodes between 1979 and 1980. It was known for its realistic sound effects, high production values, and documentary-style dialog. The show was created by Lee Hansen and featured J. Michael Straczynski as one of the writers.

The series, set in the mid-21st century, follows the International Space Authority (ISA) as they govern space exploration and development. The show centers around the adventures of ISA staff as they explore strange cosmic mysteries aboard the orbiting space station "Starlab" and throughout the galaxy. Alien Worlds gained popularity for its relatable characters, full symphonic soundtrack, realistic sound effects, and high production values.

The cast included Roger Dressler as Narrator & Commissioner Matthew White, Linda Gary as Maura Cassidy, Bruce Phillip Miller as SET Captain Jon Graydon, Corey Burton as Starlab Controller Jerry Lyden & Research Assistant Tim, and Chuck Olsen as SET Captain Buddy Griff. The show's soundtrack was composed by Jim Kirk, performed by the London Symphony Orchestra, and included many realistic sound effects recorded on an oil tanker in a San Pedro dry dock.

Alien Worlds was enjoyed by millions of fans worldwide and was carried by over 1500 top-rated FM radio stations. Four additional episodes were produced but never aired.