Maglaj is a town and municipality in Bosnia-Herzegovina. It is situated in the northern part of Bosnia-Herzegovina, in the Zenica-Doboj canton. The city lies 25 km (16 mi) south of the city of Doboj, the regional trade, education, culture, entertainment, and business centre. The municipality of Maglaj is one of 12 municiplaties in the Zenica-Doboj canton. The city has a population of 25,000. The whole municipality has a population of 43,000.

According to the 1910 census, the majority in the Maglaj municipality were Orthodox Christians (53.55%).

In 2005, 91% of population of the municipality were ethnic Bosniaks and another 6% were Croats.

The town is situated in the northern part of Bosnia and Herzegovina and is situated in territory where bosniaks, or Muslims, presently form a large majority. The old Maglaj, like numerous other cities in Bosnia and Herzegovina, has an old town with mosques, traditional houses dating back from the Ottoman Empire, and a fortress that stands as a symbol of Maglaj. The new part of Maglaj, situated on the West side of the river Bosna, is made up of modern architecture that was started in the 1950s, and became massively developed until 1991.