Ue or UE may refer to:
Ue or Straight U (Ү ү; italics: Ү ү) is a letter of the Cyrillic script. It is a form of the Cyrillic letter U (У у У у) with a vertical, rather than diagonal, center line. Though the letter resembles the Latin letter Y (Y y) in its uppercase form, the two should not be confused.
Ue is used the alphabets of the Bashkir, Buryat, Kalmyk, Kazakh, Kyrgyz, Mongolian, Tatar and other languages. It represents the close front rounded vowel , the pronunciation of the Latin letter U with umlaut (Ü ü) in German.
In Tuvan the Cyrillic letter can be written as a double vowel.