Khulna (Bengali: খুলনা, [ˈkhulna]) is the third largest city in Bangladesh after Dhaka and Chittagong. It is the administrative territory of Khulna District and Khulna Division. The economy of Khulna is the third largest in the People's Republic of Bangladesh, contributing $53 billion in nominal gross state product, and $95 billion in purchasing power parity (PPP) terms as of 2020. In the 2011 census, the city had a population of 663,342. Khulna is located on the bank of the Rupsha and Bhairab Rivers. A centre of Bangladeshi industry, it hosts many national companies. Khulna is served by Port of Mongla (the second-largest seaport in the country), and is one of two principal naval-command centres hosting the Bangladesh Navy. The navy base BNS Titumir is in the city. A colonial steamboat service, including the Tern, Osrich and Lepcha, continues to operate on the river route to the city. Khulna is considered the gateway to the Sundarbans, the world's largest mangrove forest and home of the Royal Bengal tiger. It is north of the Mosque City of Bagerhat, a UNESCO World Heritage Site.
