Emperor Duanzong of Song 宋端宗
Emperor of the Song dynasty
Reign	15 June 1276 – 8 May 1278
Coronation	14 June 1276
Predecessor	Emperor Gong
Successor	Zhao Bing
Born	Zhao Shi 10 July 1270 Lin'an, Song dynasty (modern-day Hangzhou, Zhejiang)
Died	8 May 1278(1278-05-08) (aged 7) Gangzhou, Song dynasty (modern-day Jiangmen, Guangdong)
Burial	Yongfu Mausoleum (永福陵, in present-day Tung Chung, Hong Kong)
Era dates Jingyan (景炎; 1276–1278) Posthumous name Emperor Yuwen Zhaowu Minxiao (裕文昭武愍孝皇帝) or Emperor Xiaogong Renyu Cisheng Ruiwen Yingwu Qinzheng (孝恭仁裕慈聖睿文英武勤政皇帝) Temple name Duanzong (端宗)
House	Zhao
Dynasty	Song (Southern Song)
Father	Emperor Duzong
Mother	Lady Yang

Emperor Duanzong of Song (10 July 1270 – 8 May 1278), personal name Zhao Shi, was the 17th emperor of the Song dynasty of China, and the eighth and penultimate emperor of the Southern Song dynasty. He was the fifth son of Emperor Duzong and an elder brother of his predecessor, Emperor Gong and successor Zhao Bing.

Emperor Gong along with Grand Dowager Xie surrendered to the Yuan dynasty in 1276 after the fall of the Southern Song capital, Lin'an (present-day Hangzhou). Zhao Shi and his seventh brother, Zhao Bing, managed to escape southward to Fujian, where the new Song capital was established. On June 14, 1276, Zhao Shi was enthroned as the new Emperor Duanzong who ruled under the era name "Jingyan" (景炎; literally: "bright flame"). However, in early 1278, Yuan forces broke through the Song dynasty's last lines of defence, forcing Zhao Shi to flee again.^[1] Accompanied by loyal ministers such as Lu Xiufu and Zhang Shijie, Zhao Shi boarded a ship and fled further south to Guangdong Province. In March 1278, while fleeing from Yuan forces led by Liu Shen, in a hurricane, Zhao Shi fell from a boat and almost drowned. Thereafter, he stayed temporarily in Hong Kong which at that time was a small fishing village. He died a few months later in Gangzhou (碙州; present-day Jiangmen)^[1] due to Illness. He was succeeded by his seventh brother, Zhao Bing, who was enthroned in Mui Wo, the same village where Zhao Shi nearly drowned and died. The body of Zhao Shi is buried in Yongfu Mausoleum (永福陵). The actual area of the tomb is still unknown and undiscovered.^{[citation needed]}

The historical relic Sung Wong Toi in present-day Hong Kong's Kowloon City commemorates Zhao Shi's escape to Hong Kong.

• Chinese emperors family tree (middle)
• List of emperors of the Song dynasty

• Toqto'a, ed. (1343). History of Song. Vol. 47.