Odisha (English: , Odia: [oɽiˈsa] (listen)), formerly Orissa ( the official name until 2011), is an Indian state located in Eastern India. It is the 8th largest state by area, and the 11th largest by population. The state has the third largest population of Scheduled Tribes in India. It neighbours the states of West Bengal and Jharkhand to the north, Chhattisgarh to the west, Andhra Pradesh and Telangana to the south. Odisha has a coastline of 485 kilometres (301 mi) along the Bay of Bengal in Indian Ocean. The region is also known as Utkala and is also mentioned in India's national anthem, "Jana Gana Mana". The language of Odisha is Odia, which is one of the Classical Languages of India. The ancient kingdom of Kalinga, which was invaded by the Mauryan Emperor Ashoka (which was again won back from them by King Kharavela) in 261 BCE resulting in the Kalinga War, coincides with the borders of modern-day Odisha. The modern boundaries of Odisha were demarcated by the British Indian government when Orissa Province was established on 1 April 1936, consisting of the Odia-speaking districts of Bihar and Orissa Province. The first of April is celebrated as Utkala Dibasa/Odisha Day. Cuttack was made the capital of the region by Anantavarman Chodaganga in c. 1135, after which the city was used as the capital by many rulers, through the British era until 1948. Thereafter, Bhubaneswar became the capital of Odisha. The economy of Odisha is the 16th-largest state economy in India with ₹5.86 trillion (US$73 billion) in gross domestic product and a per capita GDP of ₹127,383 (US$1,600). Odisha ranks 32nd among Indian states in Human Development Index.

Bhubaneswar (; Odia: [ˈbʱubɔneswɔɾɔ, -ɕwɔɾ] (listen)) is the capital and largest city of the Indian state of Odisha. The region, especially the old town, was historically often depicted as Ekamra Khetra (area (kshetra) adorned with mango trees (ekamra)). Bhubaneswar is dubbed the "Temple City", a nickname earned because of the 700 temples which once stood there. In contemporary times, it has emerged as an education hub and an attractive business destination.Although the modern city of Bhubaneswar was formally established in 1948, the history of the areas in and around the present-day city can be traced to the 7th century BCE and earlier. It is a confluence of Hindu, Buddhist and Jain heritage and includes several Kalingan temples, many of them from 6th–13th century CE. With Puri and Konark it forms the 'Swarna Tribhuja' ("Golden Triangle"), one of eastern India's most visited destinations.Bhubaneswar replaced Cuttack as the capital on 19 August 1949, 2 years after India gained its independence from Britain. The modern city was designed by the German architect Otto Königsberger in 1946. Along with Jamshedpur and Chandigarh, it was one of modern India's first planned cities. Bhubaneswar and Cuttack are often referred to as the 'twin cities of Odisha'. The metropolitan area formed by the two cities had a population of 1.7 million in 2011. The Bhubaneswar metro area has a population of around a million people, and is categorised as a Tier-2 city. Bhubaneswar and Rourkela are the only cities in smart city mission from Odisha.