Back Duc Huan de Qi Catalan دووک ھوانی چی CKB Huan von Qi German Qi Huan Gong French Vojvoda Huan od Qija Croatian Xiǎobái ID 桓公 (斉) Japanese 제 환공 Korean Huan (hertog) Dutch Hertug Huan av Qi NB
| Duke Huan of Qi 齊桓公 | |||||||||
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 Duke Huan of Qi (middle) and Guan Zhong (right) depicted on Wu Family Shrines stone-relief. | |||||||||
| Duke of Qi | |||||||||
| Reign | 685–643 BC | ||||||||
| Predecessor | Lü Wuzhi | ||||||||
| Successor | Lü Wukui | ||||||||
| Died | 643 BC | ||||||||
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| House | Jiang | ||||||||
| Dynasty | Jiang Qi | ||||||||
| Father | Duke Xi | ||||||||
| Mother | Wey Ji | ||||||||
Duke Huan of Qi (Chinese: 齊桓公; pinyin: Qí Huán Gōng), personal name Lü Xiaobai, was a duke of the Qi state, ruling from 685 BC to 643 BC.
Duke Huan and his long-time advisor Guan Zhong managed to transform Qi into China's most powerful polity. Duke Huan is commonly listed among the Five Hegemons of the Spring and Autumn period. Toward the end of his more than 40-year-long reign, however, Duke Huan's power began to decline as he grew ill and the Qi state came to be embroiled in factional strife. Following his death in 643 BC, Qi completely lost its predominance.