Barahiya is a town and nagar parishad in Lakhisarai district in the Indian state of Bihar.

[1] It lies on the southern bank of the river Ganges, about 116.8 km east of Patna As of 2011 Indian Census, Barahiya had a total population of 43,032, of which 22,817 were males and 20,215 were females, with a sex ratio of 886.

The total number of literates in Barahiya was 26,746, which constituted 62.2% of the population with male literacy of 67.4% and female literacy of 56.2%.

[1] As of 2001[update] India census, Barahiya had a population of 39,745.

[4] Barhiya is connected to major cities of India by the Delhi-Kolkata main line, as it falls on the Asansol-Patna section which runs along the historic Grand Trunk road.