Marquis Xiaozi of Jin (Chinese: 晉小子侯; pinyin: Jìn Xiǎozǐ Hóu), given name unknown, was a ruler of the Jin state. He reigned for four years from 708 BC to 705 BC.
In 705 BC, Duke Wu of Quwo killed Marquis Xiaozi. King Huan of Zhou sent Guo Zhong (虢仲) to attack Duke Wu of Quwo, and Duke Wu retreated to Quwo. King Huan of Zhou then installed Ji Min, the uncle of Marquis Xiaozi, on the throne of Jin.