Donja Badanja (Serbian Cyrillic: Доња Бадања, meaning 'a wooden pipe made of a hollowed trunk', often used to direct water on the wheel of a water-mill) is a village in western Serbia.

Donja Badanja is connected by motorway to Šabac and Loznica, and further by highway to Belgrade.

Autumn is longer than spring, with long sunny and warm periods.

There is a hostel named Cernica in Banja Badanja and other larger hotel is built at the present.

[citation needed] According to legend, the village's name comes from badanj, a wooden pipe which has been used to direct water onto a water-mill wheel.