Haldwani (Kumaoni: Haldvānī) is the largest city of Kumaon. It is also the third most populous city and largest commercial market in the Indian state of Uttarakhand. Haldwani is said to be the financial capital of Uttarakhand, having the most commercial, economic and industrial activities of the state. Haldwani is located in the Nainital District, and is one of its eight Subdivisions. The Haldwani Urban agglomeration has 232,060 people as of 2011, and is the third most populous UA in Uttarakhand, after Dehradun and Haridwar. Being situated in the immediate foothills of Kumaon Himalayas, the Kathgodam neighbourhood of Haldwani is known as the "Gateway to Kumaon".
Located in the Bhabhar region in the Himalayan foothills on the banks of the Gaula River, the was established in 1834, as a mart for hill people who visited Bhabar during the cold season. The establishment of the Bareilly–Nainital provincial road in 1882 and the Bhojeepura–Kathgodam railway line by Rohilkund and Kumaon Railway in 1884 helped develop the town into a major trading post and then a hub between the hilly regions of Kumaon and the Indo-Gangetic Plains.
The name "Haldwani" is an anglicised version of the Kumaoni word "Haldu-vani" (literally "forest of Haldu"), named after the tree of "Haldu" (Kadamb), known to botanists as Haldina cordifolia. The Haldu trees were found in abundance around the city prior to deforestation of the region for agriculture and settlement. The place was regionally known as Halduvani until George William Traill took over as Commissioner of Kumaon and renamed it to Haldwani in 1834.
The Bhabhar region, where the city is located, has historically been a part of the Kingdom of Kumaon. The region came under the dominion of Kumaon, when King Gyan Chand of Chand Dynasty visited Delhi Sultanate in the 14th century. Later, the Mughals tried to take over the hills, but their attempts received a setback due to the difficult terrain.
In the early 1600s, the Haldwani region was sparsely populated. It was inhabited by people of a Native tribe known as the Buksa.