Na Haeo (Thai: นาแห้ว; IPA: [nāː hɛ̂w]) is the westernmost district (amphoe) of Loei province, northeastern Thailand.

This old temple has beautiful murals in Isan style inside and outside the ordination hall called 'hup taem.'

According to the study by the Fine Arts Department, construction in Wat Pho Chai Na Phueng and the Buddha image of the temple more than 450 years old.

In King Rama V's reign, the settlement about borderline between Siam (Thailand at that time) and France was made and since then the other side of the river became part of Laos.

[3] The northern part of the district reaches the southern end of the Luang Prabang Range mountain area of the Thai highlands.