Qian Xuantong (錢玄同 in pinyin: Qián Xuántóng) (1887-1939) was a Chinese phonetician who promoted vernacular Chinese (baihua).

• Birth given name: Xing (行 xíng)
• Courtesy name (zi): Xia (夏 xià)

Qian was born in Wuxing (吳興), Zhejiang. He held the position as a professor in numerous universities.

His son Qian Sanqiang was a nuclear physicist who contributed to development of nuclear weapons in China.