| 31. | .wpd | application/wordperfect ◊ application/x-wpwin |
| 32. | .wpt | x-lml/x-gps |
| 33. | .wq1 | application/x-lotus |
| 34. | .wri | application/mswrite ◊ application/x-mswrite ◊ application/x-wri |
| 35. | .wrl | model/vrml ◊ application/x-world ◊ i-world/i-vrml ◊ x-world/x-vrml |
| 36. | .wrz | model/vrml ◊ x-world/x-vrml |
| 37. | .wsc | text/sgml ◊ text/scriptlet |
| 38. | .wsrc | application/x-wais-source |
| 39. | .wtb | application/vnd.webturbo |
| 40. | .wtk | application/x-wintalk |