Huai Khwang station (Thai: สถานีห้วยขวาง, pronounced [sā.tʰǎː.nīː hûa̯j kʰwǎːŋ]; code BL18) is a MRT station on the Blue Line in Bangkok, Thailand. It is located under Ratchadaphisek Road, near the MRT Depot. Before the station's opening, the plan was to name it Pracha Rat Bamphen. The name was changed to Huai Khwang later. The station's symbol is color   orange.

G	-	Bus stop
B1	Basement	Exits 1–4
B2	Concourse	Ticket machines
B3	Platform 2	Blue towards Tha Phra via Bang Sue (Sutthisan)
	Island platform, doors will open on the right
	Platform 1	Blue towards Lak Song (Thailand Cultural Centre)

Huai Khwang is underground station, widths 23 metres (75 ft), lengths 226 metres (741 ft), depths 19 metres (62 ft), and use island platform.

There is MetroMall in the station, but not opened yet.

13°46′43″N 100°34′26″E / 13.7786°N 100.5740°E / 13.7786; 100.5740