Worlds of If was a three-time winner of the Hugo Award for best science fiction magazine. Worlds of If discovered many talented writers who would go on to dominate genre fiction. Here are more than 250,000 words of some of the best stories ever published in its pages.

1. The Snowbank Orbit by Fritz Leiber
2. The Victor by Bryce Walton
3. Breeder Reaction by Winston Marks
4. Turning Point by Alfred Coppel
5. Masters of Space by Edward E. Smith & E. Everett Evans
6. Cultural Exchange by Keith Laumer
7. The Lonely Ones by Edward W. Ludwig
8. The Kenzie Report by Mark Clifton
9. The Very Secret Agent by Mari Wolf
10. Irresistible Weapon by H. B. Fyfe
11. In the Garden by R. A. Lafferty
12. The Eyes Have It by James McKimmey, Jr.
13. Trees Are Where You Find Them by Arthur Dekker Savage
14. The Real Hard Sell by William W. Stuart
15. Waste Not, Want by Dave Dryfoos
16. The Last Supper by T. D. Hamm
17. Letter of the Law by Alan E. Nourse
18. Sweet Their Blood and Sticky by Albert R. Teichner
19. The Last Place on Earth by Jim Harmon
20. Quiet, Please by Kevin Scott
21. Service with a Smile by Charles L. Fontenay
22. Time Fuze by Randall Garrett
23. The Skull by Philip K. Dick
24. The Ordeal of Colonel Johns by George H. Smith
25. Incident on Route 12 by James H. Schmitz
26. Brink of Madness by Walt Sheldon
27. Love Story by Irving E. Cox, Jr.
28. Navy Day by Harry Harrison
29. The Anglers of Arz by Roger Dee
30. Assassin by J. F. Bone
31. Probability by Louis Trimble
32. Sjambak by Jack Vance
33. Deadly City by Ivar Jorgenson
34. The Mightiest Man by Patrick Fahy
35. Mutineer by Robert J. Shea
36. And That's How it Was, Officer by Ralph Sholto
37. No Shield from the Dead by Gordon R. Dickson
38. Seven-Day Terror by R.A. Lafferty
39. I'll Kill You Tomorrow by Helen Huber
40. Security Risk by Ed M. Clinton, Jr.
41. Confidence Game by James Mckimmey, Jr.