Mong Tseng Wai (Chinese: 輞井圍) is a walled village in Yuen Long District, New Territories, Hong Kong.
Mong Tseng Wai is a recognized village under the New Territories Small House Policy.
[1] For electoral purposes, Mong Tseng Wai is part of the Ping Shan North constituency.
In 2001, a house structure with underground water system dated to Song dynasty were discovered in Mong Tseng Wai by the Hong Kong Archaeological Society.
Mong Tseng Wai was founded by the Tang Clan of Kam Tin during the Ming dynasty.