The Worlds of Robert A. Heinlein

The Worlds of Robert A. Heinlein is a collection of science fiction short stories by Robert A. Heinlein published in 1966.

It includes an introduction entitled "Pandora's Box" that describes some of the difficulties in making predictions about the near future. Heinlein outlines some of his predictions that he made in 1949 (published 1952) and examines how well they stood up to some 15 years of progress in 1965. The prediction was originally published in Galaxy magazine, Feb 1952, Vol. 3, No. 5, under the title "Where to?" (pp. 13–22).

Following the introduction are five short stories:

In 1980, the entire contents of this collection, with an updated version of "Pandora's Box", were included in Heinlein's collection, Expanded Universe.