Wat Pak Nam Fang Nuea (Thai: วัดปากน้ำฝั่งเหนือ) is an old Thai Buddhist temple in Bangkok. It is a monastery paired with Wat Pak Nam Fang Tai, which is located on the opposite side with only the Khlong Bang Chueak Nang in the middle.

The temple history is unclear, assumed to be built around 1827 and received wis̄ungkhāms̄īmā (วิสุงคามสีมา, "the boundary of the temple was bestowed by the king") in 1835.

Legendarily both temple builders are brothers. Later, they had a disagreement, so they split up to build different temples, which is opposite the bank of the canal namely Wat Pak Nam Fang Nuea ("the temple on the northern side of the confluence") and Wat Pak Nam Fang Tai ("the temple on the southern side of the confluence").

Wat Pak Nam Fang Nuea is smaller than Wat Pak Nam Fang Tai. The ordination hall is small in Mon style, facing east, with a single door without windows, known locally as mhaaud (มหาอุด). The principal Buddha image in the posture of meditation is called Luang Phor Petch (หลวงพ่อเพชร).

Originally, it was inaccessible by car. In 2004, Wat Pak Nam Wittayakom School (present-day Princess Ubolratana Rajakanya's College), located on the temple grounds, opened up a space in the back of the school, thus allowing cars to access the temple.

The temple is listed by the Fine Arts Department as a registered ancient monument in 2023.