- 英语系 Yīngyǔxì English departmentan academic department in a university or college for the study of the English language and literature
- 印欧语系 Yìn'ōuyǔxì Indo-EuropeanIndo-European family of languages
- 汉藏语系 Hàn Zàngyǔxì Sino-TibetanSino-Tibetan language family
- 闪含语系 Shǎn Hányǔxì Hamito-SemiticHamito-Semitic family of languages (including Arabic, Aramaic, Hebrew, etc.)