Phetchaburi MRT station (, ; code BL21) is a Bangkok MRT station on the Blue Line. It is located under the junction of Asok and New Phetchaburi Road. Commuters can transfer to the Airport Rail Link at Makkasan Station, and the SRT Eastern Line at Asok Halt, located at ground level.
The station uses symbol of a water wave referring to Khlong Saen Saeb. It is an underground station, wide and in length, with a depth of , and uses island platform
There is a MetroMall in the station.
Phetchaburi station is connected to Makkasan station by a covered-elevated footpath. Fare and ticket systems between the two lines are not integrated.