- 英语系 yīngyǔxì English department; anglophone departmentDepartment of English language and literature in a college or university
- 印欧语系 yìn'ōuyǔxì Indo-Europeanthe Indo-European family of languages
- 汉藏语系 hànzàngyǔxì Sino-Tibetan language familyThe major language family of the Far East and Southeast Asia, primarily consisting of the Sinitic and Tibeto-Burman branches. By number of speakers, it is the world's second-largest language family after the Indo-European family.
- 藏汉语系 zànghànyǔxì Sino-Tibetanthe Sino-Tibetan language family
- 闪含语系 shǎnhányǔxì Hamito-SemiticHamito-Semitic family of languages, including Arabic, Aramaic, Hebrew, and others
- 马来亚玻里尼西亚语系 mǎláiyàbōlǐníxīyàyǔxì Malayo-Polynesian language familymajor branch of the Austronesian language family, often used as a synonym for the entire family
- 南岛语系 nándǎoyǔxì Austronesian language familyThe language family spoken by the Austronesian peoples, covering a vast area from Madagascar in the west to Easter Island in the east, and from Taiwan in the north to New Zealand in the south.
- 马玻语系 mǎbōyǔxì Malayo-Polynesian language familymajor branch of the Austronesian language family
- 印支语系 yìnzhīyǔxì Sino-Tibetan language familyobsolete name for the Sino-Tibetan language family