| Y-STR | Y Chromosome Short Tandem Repeat | - | Computer Acronyms(common) |
| YAC | Yeast Artificial Chromosome | - | Computer Acronyms(common) |
| YAEL | Yankee Atomic Environmental Laboratory | - | Computer Acronyms(common) |
| YAG | Yttrium Aluminum Garnet | - | Computer Acronyms(common) |
| YBCO | Yttrium Barium Copper Oxide | - | Computer Acronyms(common) |
| YFEGE | Yonei Free-electron-gas Exchange | - | Computer Acronyms(common) |
| YFP | Yellow Fluorescent Protein | - | Computer Acronyms(common) |
| YIG | Yttrium Iron Garnet | - | Computer Acronyms(common) |
| YLF | Yttrium Lithium Fluoride | - | Computer Acronyms(common) |
| YOS | Yttrium Orthosilicate | - | Computer Acronyms(common) |
| YSAG | Yttrium Scandium Aluminum Garnet | - | Computer Acronyms(common) |
| YSGG | Yttrium Scandium Gallium Garnet | - | Computer Acronyms(common) |
| YSZ | Yttria-stabilized Zirconia | - | Computer Acronyms(common) |
