Serei Saophoan is a district in the centre of Banteay Meanchey Province, in north-western Cambodia. Serei Saophoan is the urban district of Banteay Meanchey province and the district capital is also the provincial capital Sisophon town. The town is located 359 kilometres north of Phnom Penh and 48 kilometres from the border with Thailand at Poipet. Serei Saophoan District is the central district of Banteay Meanchey and is surrounded by other Banteay Meanchey districts.