Empress Kong (孔皇后, personal name unknown) (d. 934), formally Empress Ai (哀皇后, "the lamentable empress"), was an empress of the Chinese Five Dynasties and Ten Kingdoms Period state Later Tang. Her husband was its third emperor Li Conghou (Emperor Min).
It is not known when the future Empress Kong was born. Her father was Kong Xun, who had served as an official of Later Tang's predecessor (and rival) Later Liang prior to serving Later Tang.
By 928, Kong Xun was serving as a chief of staff for Later Tang's second emperor Li Siyuan, and he was a close associate of fellow chief of staff An Chonghui, who was then the most powerful figure at court. At one point, Li Siyuan had wanted to take An's daughter as wife for one of his sons. Kong dissuaded An, arguing that given how honored and how close to the emperor he was, it was inappropriate to further create a marital relationship, so An declined. However, thereafter, there were those who told An that Kong was good at alienating people. When Kong heard this, apparently wanting to create a relationship with the imperial household independent of his relationship with An, he ingratiated Li Siyuan's favorite concubine Consort Wang and sought that his daughter be married to an imperial prince. Consort Wang thus suggested to Li Siyuan that Kong's daughter be married to his son Li Conghou. Li Siyuan agreed. When An heard this, he became incensed, and he had Kong ejected from the court (then at Daliang) to serve as the defender of Luoyang. However, this did not stop the marriage, and the wedding took place around the new year 929. It was because of the wedding's taking place that Kong was able to go to Daliang to attend the wedding. Once at Daliang, he again tried to ingratiate Consort Wang and her associates, hoping to stay at Daliang. Due to An's stern opposition, however, he was returned to Luoyang.
Princess Kong was said to be wise in her actions, and she bore four sons for Li Conghou.
Li Siyuan died in late 933, and Li Conghou became emperor. According to the New History of the Five Dynasties, he created Princess Kong empress, but a formal creation ceremony was not held at that time.