Buzen (豊前国; - No kuni ) is an old province of the Japan which was located on the island of Kyūshū, in current the Préfecture of Fukuoka.

The ruins of the old capital of the province were found close to the town of Toyotsu. Another important city of the province was the town of Kokura.

After the abolition of the feudal system in 1871, the province became the Préfecture of Kokura. This prefecture was absorbed four years later by the prefecture of Fukuoka.