Hepu is a county in southeastern Guangxi, China, administered by Beihai City. It is also romanized as Hoppo, Hopu, or Hop'u. The county borders Lianjiang in Guangdong to the southeast, Bobai County to the northeast, the Gulf of Tonkin to the south, Qinzhou to the west, and Pubei County to the north.
Hepu covers an area of about 2,380 square kilometers and had a population of 930,914 as of 2003. It was formerly known as Lianzhou. In November 1992, then-Premier Li Peng referred to the area as "the Southern Pearl County."