Protobothrops xiangchengensis, commonly known as the Szechwan pit viper, Kham Plateau pit viper,[1][3][5] or Sichuan lancehead,[1] is a pit viper species endemic to the Hengduan Mountains in south-central China.

[5][6] Originally described as a member of the genus Trimeresurus, it was later reassigned to Protobothrops.

[3] Protobothrops xiangchengensis is endemic to the Hengduan Mountains in the provinces of Yunnan and western Sichuan, China.

[1] According to David & Tong (1997), the type locality given is "Sichuan Province, Xiangcheng, altitude 3100 m [10,200 ft]".

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