| Y |
Grammar file (Yaac) |
| Y |
Compressed Amiga archive (YABBA) |
| YAL |
Clipart library (Arts & Letters) |
| YBK |
Yearbook file (Microsoft Encarta) |
| YUV |
Graphics file (YUV) |
| YZ |
Compressed file archive (YAC) |
| Y01 |
Secondary index file (Paradox) |
| Y02 |
Secondary index file (Paradox) |
| Y03 |
Secondary index file (Paradox) |
| Y04 |
Secondary index file (Paradox) |
| Y05 |
Secondary index file (Paradox) |
| Y06 |
Secondary index file (Paradox) |
| Y07 |
Secondary index file (Paradox) |
| Y08 |
Secondary index file (Paradox) |
| Y09 |
Secondary index file (Paradox) |
