Wang Prachan (, ) is a sub-district (tambon) of Khuan Don District, Satun Province of Thailand, at the boundary to Malaysia.
Thai Hwy 4181, which passes through the sub-district, connects Satun with Wang Kelian in Malaysia.
, the sub-district has a population of 2,380.
The sub-district is led by a tambon administrative organization (TAO), which was established in 2004. The sub-district itself was established in 1914, and is divided into four villages (muban).