Podunavlje may refer to:
Podunavlje, the name of the Danube river basin parts located in Serbia and Croatia Podunavlje District, a district in Serbia Podunavlje, a formerly proposed new administrative division of Serbia, roughly corresponding to present-day Southern and Eastern Serbia Podunavlje (Novi Sad), one of seven former municipalities of Novi Sad City in Serbia Podunavlje, Bilje, a settlement in Croatian Baranja Gornje Podunavlje, a protected nature reserve in Serbian part of Bačka