tˈæn kˈaɪ tʃaɪnˈiːz: tʃˈaɪniːzlˌɛɾɚ tʃˈaɪniːzlˌɛɾɚ; bˈɔːɹn nˈaɪntiːnhˈʌndɹɪd sˈɛvənti θɹˈiː ɪz ɐ tʃaɪnˈiːz kəmpjˈuːɾɚ tɛknˈɪʃən ænd ɐn ɛnvˌaɪɹənmˈɛntəl ˈæktɪvˌɪst fɹʌm ʒˈɛdʒjɑːŋ pɹˈɑːvɪns.
Tan Kai (Chinese: 谭凯; born 1973) is a Chinese computer technician and an environmental activist from Zhejiang province.