Odžak is a town in the northern part of Bosnia and Herzegovina, located near the river Sava, 10 km from the border with Croatia. Odžak is in the Posavina Canton of the Federation of Bosnia and Herzegovina.

Odzak on map BiH Population 30,651

In the 1991 census the municipality of Odžak had 30,651 residents, of which were 54.15% Croats, 20.32% Bosniaks, 19.85% Serbs, 3.70% Yugoslavs and 1.98% others. The city itself had 9377 residents.

The local football club is NK Odžak 102.