Donja Podgorja is a settlement in Bosnia and Herzegovina, in the Municipality of Mrkonjic Grad of the Republika Srpska entity.
Donja Podgorja derives from the combined words of Pod (under) and Gora (hill or mountain) translating to a settlement under a mountain.
According to the 1991 census, the village had a total of 64 inhabitants. Ethnic groups in the village include:
According to the 2013 census, the village had a total of 12 inhabitants. Ethnic groups in the village include: