| Magazine/edition title | # of issues | Code | Notes |
| Sinister Stories |
3
|
SIN
|
|
| Sinister Stories UK reprint |
1
|
||
| Sky Worlds |
4
|
SKY
|
|
| Space Adventures |
6
|
SPA
|
|
| Space Adventures (Classics) |
-
|
-
|
VT of Space Adventures - see SPA |
| Space Fact & Fiction |
8
|
SPN
|
|
| Space Science Fiction |
2
|
SPM
|
Republic Features, 1957 |
| Space Science Fiction |
8
|
SPF
|
Space Publications, 1952-3 |
| Space Science Fiction UK edn |
8
|
SPF1
|
Reprint of SPF |
| Space Stories |
5
|
SPS
|
|
| Space Travel |
-
|
-
|
VT of Imaginative Tales - see IMT |
| Spaceway |
12
|
SPW
|
|
| Spaceway - Stories of the Future |
-
|
-
|
VT of Spaceway - see SPW |
| Spaceway Science Fiction |
-
|
-
|
VT of Spaceway - see SPW |
| Spaceway UK reprint |
4
|
SPW1
|
|
| Space-Wise |
4
|
SPY
|
|
| Speed Mystery Stories |
19
|
SPCM1
|
Continuation of Spicy Mystery with new numbering |
| Spicy Mystery Stories |
73
|
SPCM
|
|
| Star Science Fiction |
1
|
STA
|
|
| Startling Mystery Magazine |
2
|
SMM
|
pub Fictioneers, Inc. 1940 |
| Startling Mystery Magazine (UK edn) |
1
|
||
| Startling Mystery Stories |
18
|
SMS
|
pub Health Knowledge 1966-71 |
| Startling Stories |
99
|
STS
|
|
| Startling Stories Canadian edn |
22
|
||
| Startling Stories UK edn. |
18
|
||
| Stirring Science Stories |
4
|
STG
|
|
| Strange Adventures |
2
|
||
| Strange Detective Mysteries |
33
|
SDM
|
|
| Strange Fantasy |
6
|
STF
|
|
| Strange Stories |
13
|
STR
|
|
| Strange Tales |
2
|
Utopian Publications, 1946, UK (1st issue printed in two variations) | |
| Strange Tales of Mystery & Terror |
7
|
STLA
|
pub Clayton 1931-3, US |
| Strangest Stories Ever Told, The |
1
|
SST
|
|
| Super Science and Fantastic Stories |
-
|
-
|
VT of Super Science Stories Canadian edn - see SSS3 |
| Super Science Novels |
-
|
-
|
VT of Super Science Stories - see SSS |
| Super Science Stories |
31
|
SSS
|
|
| Super Science Stories 1st UK edn (1949-50) |
3
|
||
| Super Science Stories 2nd UK edn (1950-53) |
14
|
||
| Super Science Stories Canadian edn. |
36
|
Continued after SSS original folded | |
| Supernatural Stories |
108
|
||
| Super-Science Fiction |
18
|
SSF
|
|
| Suspense |
1
|
SUT
|
Suspense Publications, Inc 1959 |
| Suspense Magazine |
4
|
SUS
|
pub Farrell 1951-2 |
| Suspense Tales |
-
|
-
|
VT of Suspense shown on index page - see SUT |
| Swan American |
2
|
Two SF issues from a longer, mixed-genre series | |
| Swan Yankee |
-
|
-
|
VT (used by Tuck) for Yankee Shorts - see YAN |
| Sword & Sorcery |
-
|
Never reached publication stage, proof only |