Bara District is one of the seventy–seven districts of Nepal, located in the western part of the Madhesh Province. The district is third richest district in Nepal after Kathmandu and Morang with 3.3% share of total GDP of Nepal and highest per capita income in Madhesh province. Kalaiya serves as the district's headquarter. Bakaiya, Jamuniya, Pasaha, Dudhaura and Bangari are the main rivers of Bara. The main languages spoken in the district are Bhojpuri, Bajjika, Tharu and Nepali.

Madhesh Province is a province of Nepal in the Terai region with an area of 9,661 km2 (3,730 sq mi) covering about 6.5% of the country's total area. It has a population of 6,126,288 as per the 2021 Nepal census, making it Nepal's most densely populated province and the smallest province by area. It borders Koshi Pradesh to the east and the north, Bagmati Province to the north, and India’s Bihar state to the south and the west. The border between Chitwan National Park and Parsa National Park acts as the provincial boundary in the west, and the Kosi River forms the provincial border in the east. The province includes eight districts, from Parsa in the west to Saptari in the east.