| Duke Cheng of Qi 齊成公 | |
| Succession: | Ruler of Qi |
| Reign: | 803–795 BC |
| Predecessor: | Duke Wen of Qi |
| Successor: | Duke Zhuang I of Qi |
| Full Name: | Ancestral name Jiang (姜) |
| House: | House of Jiang |
| Death Date: | 795 BC |
| Father: | Duke Wen of Qi |
| Issue: | Duke Zhuang I of Qi |
Duke Cheng of Qi (; died 795 BC) was the eleventh recorded ruler of the State of Qi during the Western Zhou dynasty of ancient China reigning from 803 to 795 BC. His personal name was Lü Yue (呂說), ancestral name Jiang (姜), and Duke Cheng was his posthumous title.[1] [2]
Duke Cheng succeeded his father Duke Wen of Qi, who died in 804 BC, as ruler of Qi. He reigned for 9 years and died in 795 BC. He was succeeded by his son, Duke Zhuang I of Qi.[1] [2]
Sons: