| Huan Shu of Quwo 曲沃桓叔 | |
| Succession: | Ruler of Quwo |
| Reign: | 745–731 BC |
| Predecessor: | None (Dynasty established) |
| Successor: | Count Zhuang |
| Father: | Marquis Mu of Jin |
| Issue: | Count Zhuang of Quwo Viscount Wu of Han |
| Full Name: | Ancestral name Jī (姬) |
| Birth Date: | 802 BC |
| Death Date: | 731 BC |
| Posthumous Name: | Huan (桓) |
| House: | Ji |
| Dynasty: | Quwo |
Huan Shu of Quwo (; 802–731 BC), personal name Ji Chengshi, was the first ruler of the Quwo (曲沃) state, a fief of the Jin state. He was a son of Marquis Mu of Jin and uncle of Marquis Zhao of Jin, who granted him the land of Quwo.
In 745 BC, Marquis Zhao of Jin enfeoffed Huan Shu at Quwo (around modern-day Quwo County, Shanxi). He was said to be a benevolent ruler beloved by the people of Quwo.
In 739 BC, Jin official Panfu (潘父) murdered Marquis Zhao of Jin and invited Huan Shu to ascend the throne of Jin. However, Huan Shu was defeated by Jin troops and retreated to Quwo.
In 731 BC, Huan Shu died and was succeeded by his son, Count Zhuang of Quwo, to the Quwo throne. Another son of Huan Shu, Viscount Wu of Han, became the progenitor of the ruling house of the Han state.