Duke Zhuang I of Qi (Chinese: 齊前莊公; pinyin: Qí Qián Zhuāng Gōng; died 731 BC) was from 794 to 731 BC the twelfth recorded ruler of the State of Qi during the Zhou dynasty of ancient China. His personal name was Lü Gou (呂購), ancestral name Jiang (姜), and Duke Zhuang was his posthumous title. He was the first of the two Qi rulers called Duke Zhuang.