乌兹别克语或乌孜别克语（西里尔字母：Ўзбек тили；阿拉伯字母：اوزبیک تیلی，拉丁字母：Oʻzbek tili）是阿尔泰语系突厥语族语言，是乌兹别克斯坦的官方语言。乌兹别克语有约1850万用户，为乌兹别克族和中亚地区的人使用。古乌兹别克语在粟特、大夏和花剌子模使用。乌兹别克语的词汇和语法，与**几乎相同，但亦受到波斯语和俄语的影响。有人认为应该把乌兹别克语与维**语合并，但目前普遍仍然主张把两者分开。

在1927年之前，乌兹别克语使用波斯-阿拉伯字母书写。1927年改用拉丁字母，从1940年之后改用西里尔字母。在中国，乌孜别克族仍使用阿拉伯字母书写。

Uzbek is a Turkic language and the official language of Uzbekistan. It has 27 million native speakers and is spoken by the Uzbeks in Uzbekistan and elsewhere in Central Asia. Uzbek belongs to the Eastern Turkic, or Karluk, branch of the Turkic language family. External influences include Persian, Arabic and Russian. One of the most noticeable distinctions of Uzbek from other Turkic languages is the rounding of the vowel /a/ to /ɒ/ or /ɔ/, a feature that was influenced by Persian.