Revolt in 2100 is a 1953 science fiction collection by American writer Robert A. Heinlein, part of his Future History series.
The book consists of:
- Foreword by Henry Kuttner: "The Innocent Eye"
- "If This Goes On—" (1940; originally published in Astounding Science Fiction)
- "Coventry" (1940; originally published in Astounding Science Fiction)
- "Misfit" (1939; originally published in Astounding Science Fiction)
- Afterword: "Concerning Stories Never Written"
"If This Goes On—" is a short novel detailing a rebellion against an American theocracy. Heinlein revised and expanded the magazine version for this publication. Boucher and McComas, however, described the collection as "[i]mpressive in its time, and important in the development of modern science fiction", but found it highly uneven, "with pages worthy of the mature 1954 Heinlein ... followed immediately by passages from the author's literary apprenticeship". P. Schuyler Miller found it to be "a distinctly minor Heinlein contribution, ... way below the mark Heinlein has set himself in his recent teen-age books".