Nüshu (simplified Chinese: 女书; traditional Chinese: 女書; pinyin: Nǚshū [nỳʂú]; literally "women's writing"), is a syllabic script, a simplification of Chinese characters that was used exclusively among women in Jiangyong County in Hunan province of southern China.

The Nüshu script is used to write a local dialect of Chinese known as Xiangnan Tuhua (湘南土话, 'Southern Hunanese Tuhua') that is spoken by the people of the Xiao and Yongming River region of northern Jiangyong County, Hunan. This dialect, which differs enough from the Xiang Chinese dialect of southern Jiangyong and other parts of Hunan that it is unintelligible to speakers of that dialect, is known to its speakers as [tifɯə] "Dong language", and it is only written in the Nüshu script. There are differing opinions on the classification of Xiangnan Tuhua, as it has features of several different Chinese languages, with some scholars classifying it under Yue Chinese and other scholars considering it a hybrid dialect. In addition to speaking Tuhua, most local people in Jiangyong are bilingual in the Hunan dialect of Southwestern Mandarin, which they use for communication with people from outside the area that Tuhua is spoken, as well as for some formal occasions. If Hunan Southwestern Mandarin is written, then it is always written using standard Chinese characters, and not with the Nüshu script.