Gong Ao (; died 204 BC) was a ruler of the Kingdom of Linjiang of the Eighteen Kingdoms during the Chu–Han Contention, an interregnum between the Qin Dynasty and the Han Dynasty. Gong Ao descended from a noble family of the Chu state in the Warring States period. He served King Huai II of the insurgent Chu kingdom that was established in the final years of the Qin Dynasty. After the fall of Qin in 206 BC, Xiang Yu divided the former Qin Empire into the Eighteen Kingdoms, and granted Gong Ao the title of "King of Linjiang" (臨江國). Gong Ao's fief was located in Nan (南郡; covering most of present-day northern Hubei) of the former Qin Empire, with Jiangling (江陵; present-day Jiangling County, Jingzhou, Hubei) as his capital.