| y {letter} | :: the letter y |
| Y {letter} | :: The twenty-fifth letter of the German alphabet |
| Yacht {f} | :: alternative spelling of Jacht |
| yahen {v} | :: dated form of iahen |
| Yak {m} {n} | :: yak (Asian bovine) |
| Yakbutter {f} | :: yak butter |
| Yang {n} | :: yang |
| Yannick {prop} {m} | :: given name |
| Yannik {prop} {m} | :: given name |
| Yasmin {prop} | :: given name |
| Ybbsitz {prop} {n} | :: Ybbsitz (municipality) |
| Yen {m} | :: yen (unit of Japanese currency) |
| Yersiniose {f} | :: yersiniosis |
| Yeti {m} | :: yeti; abominable snowman |
| y-förmig {adj} | :: alternative form of Y-förmig |
| Y-förmig {adj} | :: Y-shaped |
| Ylid {n} | :: ylide |
| Yobibyte {n} | :: yobibyte (280 bytes) |
| Yoga {n} {m} | :: yoga (a Hindu discipline) |
| Yottabyte {n} | :: yottabyte (1024 bytes) |
| you name it {phrase} | :: you name it |
| YouTube {prop} {n} | :: YouTube |
| Ypecaharalle {f} | :: giant wood rail |
| Yperit {n} | :: mustard gas (yperite) |
| Ypern {prop} | :: Ypres |
| Ypsilon {n} | :: Y (25th letter of the German and English alphabet) |
| Ypsilon {n} | :: upsilon (Greek letter) |
| Y-Reisen {p} | :: The Bundeswehr |
| Ysop {m} | :: hyssop |
| Yspertal {prop} {n} | :: Yspertal (municipality) |
| Ytterbit {m} | :: ytterbite |
| Ytterbium {n} | :: ytterbium |
| Yttererde {f} | :: yttria |
| Yttrium {n} | :: yttrium |
| Yttriumbromid {n} | :: yttrium bromide |
| Yttriumchlorid {n} | :: yttrium chloride |
| Yttrium-Eisengranat {m} | :: yttrium iron garnet |
| Yttriumerz {n} | :: yttrium ore |
| Yttriumfluorid {n} | :: yttrium fluoride |
| yttriumhaltig {adj} | :: yttrium-bearing |
| Yttriumhydrid {n} | :: yttrium hydride |
| Yttriumiodid {n} | :: yttrium iodide |
| Yttriumoxid {n} | :: yttrium oxide |
| Yttriumsulfid {n} | :: yttrium sulfide |
| Yttriumverbindung {f} | :: yttrium compound |
| Yvonne {prop} | :: given name of French origin |