Kasuya (糟屋郡 Kasuya-gun?) is a district located in Fukuoka Prefecture, Japan, east of Fukuoka City.
As of 2003, the district has an estimated population of 200,503 and a density of 1,218.05 persons per km². The total area is 164.61 km². It has four stations on the Sasaguri Line, seven on the Kashii Line. Chojabaru Station serves both lines.
Coordinates: 33°37′44″N 130°31′19″E / 33.629°N 130.522°E