Bahawalnagar District (Urdu and Punjabi: ضلع بہاولنگر), is a district of Punjab province in Pakistan. Before the independence of Pakistan, Bahawalnagar was part of Bahawalpur state governed by the Nawab of Bahawalpur. The city of Bahawalnagar is the capital of the district.

The boundaries of Bahawalnagar in the east and south touches the Indian territory of Bikaner and Firozpur districts while Bahawalpur district lies on its west and river Sutlej flows on its northern side. District Bahawalnagar spreads over an area of 8878 square kilometers.

Nawab Bahawal Khan-1 as second nawab of Bahawalpur ascended the throne in 1746 A.D.

Muhammad Mubarik, after ruling successfully for years, died issueless in 1772 A.D. He was succeeded by his nephew Sahibzada Jafar Khan alias Nawab Muhammad Bahawal Khan-II in 1772.

The district of Bahawalnagar is spread over an area of 8,878 square kilometres (3427.8 square miles) comprising five tehsils and 118 Union Councils:

As of the 2023 census, Bahawalnagar district has 557,616 households and a population of 3,550,342. The district has a sex ratio of 108.27 males to 100 females and a literacy rate of 57.01%: 63.55% for males and 49.95% for females. 971,921 (27.42% of the surveyed population) are under 10 years of age. 974,118 (27.44%) live in urban areas.

In 2023, 19,653 (0.55%) were from religious minorities, of which Christians were 14,577, Hindus (incl. Scheduled Castes) 3,106, Ahmadi 1,598, Sikhs 39, Parsis 2, and 331 others.

At the time of the 2023 census, 94.08% of the population spoke Punjabi, 3.35% Urdu and 1.74% Saraiki as their first language.