Obra Assembly constituency is an assembly constituency in Aurangabad district in the Indian state of Bihar.

It comes under Karakat Lok Sabha constituency.

Obra Vidhan Sabha is constituted of two blocks of Aurangabad district viz.

The Scheduled castes (SC) and Scheduled tribes (ST) ratio is 22.05 and 0.04, respectively out of total population.

As per the voter list of 2019, there are 305747 electorates and 336 polling stations in this constituency.