Duke Zhuang of Chen (Chinese: 陳莊公; pinyin: Chén Zhuāng Gōng; reigned 699 BC – died 693 BC) was the fifteenth ruler of the ancient Chinese state of Chen during the Spring and Autumn period. His ancestral surname was Gui, given name Lin (林), and Zhuang (莊) was his posthumous name. Lin was a middle son of Duke Huan of Chen, whose brother Chen Tuo murdered Lin's eldest brother Crown Prince Mian and usurped the throne in 707 BC. The army of the neighbouring State of Cai killed Chen Tuo in 706 BC and installed Duke Li of Chen, another brother of Lin, on the throne.