Duke Dao of Qi (Chinese: 齊悼公; pinyin: Qí Dào Gōng; died 485 BC) was from 488 to 485 BC ruler of the State of Qi, a major power during the Spring and Autumn period of ancient China. His personal name was Lü Yangsheng (呂陽生), ancestral name Jiang (姜), and Duke Dao was his posthumous title. Before ascending the throne he was known as Prince Yangsheng.