Jao Nang, also known as The Princess's Terror (Thai: เจ้านาง; RTGS: Chao Nang), is a period horror Lakorn which originally aired in the mid-1990s and became known among Thai viewers as the most frightening lakorn.

It starred Chakkrit Amarat (จักรกฤษณ์ อำมรัตน์) and Kavinna Suvannaprateep (กวินนา สุวรรณประทีป) in the leading roles.

In 1997, BBTV Channel 7 released its hit lakorn, Pob Pee Fa, which provided a plot similar to this lakorn, but with different characters and story details.

The real identity of Pee Fah is Phi Pop (ผีปอบ), a ghost of popular Thai folklore.

Thai viewers recently rated it as one of the scariest lakorn ever.