Bikramganj is a nagar parishad city and corresponding community development block of Rohtas district, Bihar, India. At the time of the 2011 census, the city of Bikramganj had a population of 48,465, in 7,968 households, while the overall subdistrict had a population of 163,565. The main commodities produced in Bikramganj are rice and pulses.

It is an old local center for commercial activities developed at the crossroads connecting Patna to Sasaram and Buxar to Dehri. This crossroads is known as Bikramganj Chowk - quite an obvious landmark there.

The city of Bikramganj had one hospital as of 2011, along with two movie theatres, five nationalised banks and a community centre. The town did not have a public library at the time.

It is an emerging urban hub. Located in the "less industrialised" north of Rohtas district, surrounded with well-irrigated fertile fields which have given Rohtas the title "Rice bowl of Bihar". A railway station on Dehri road which connects to the nearby cities of Patna, Sasaram and Varanasi.

A natural river called "Kao" flows through the town and debouches to Ganga in Buxar. People of all religions live here, but Hindus are in the majority. "Chhath" is a major festival here, although Bikramganj is known for "Durga Puja Mela" when all four roads compete for the best pandals and young folks throng the Chowk area.