| 121. | .shk | Compressed Apple II file archive (ShrinkIt) ◊ Compressed archive (Arthurian Shrink Archiver) |
| 122. | .shm | Shell macro (WordPerfect Library) |
| 123. | .shn | Audio compression file (Shorten) |
| 124. | .shp | Icon library (Printmaster) ◊ Shape file and source file for text fonts (AutoCAD) ◊ Shapefile (stores feature geometry) (ArcView) ◊ Shapefile spatial data format (used by many GIS programs) |
| 125. | .shr | Unix Shell ARchive (ascii) (SHAR) |
| 126. | .shs | Shell scrap object (Windows 95) |
| 127. | .sht | HTML file containing Server Side Includes (SSI) |
| 128. | .shtml | HTML file containing Server Side Includes (SSI) |
| 129. | .shw | Presentation (Harvard Graphics - CorelPresentations - Freelance) ◊ Slide Show (WordPerfect) |
| 130. | .shx | Shape entities (AutoCAD) ◊ Shapefile (stores file lookup index) (ArcView) ◊ Shapefile spatial index file (ArcView) |