Kalinga is a tribe described in the legendary Indian text Mahabharata. They were a warrior clan who settled in and around the historical Kalinga region, present-day Odisha, west Bengal, Bangladesh and northern parts of Andhra Pradesh.
Kalinga clan warriors sided with Duryodhana in the Kurukshetra War due to matrimonial and harmony alliances between both kingdoms of Kalinga & Kuru existing even before the Great War of Mahabharata was to happen. Kalinga is the founders of five eastern kingdoms, which included: Angas (east, central Bihar), Vangas (southern West Bengal and Bangladesh), Udra (Odisha, East Madhya Pradesh and South Jharkhand), Pundras (western Bangladesh and West Bengal, India), Suhmas (north-western Bangladesh and West Bengal) shared common ancestry. Two capitals (Dantapura and Rajapura) of Kalinga were mentioned in Mahabharata, probably there were many Kalinga kings, ruling different territories of Kalinga, with many migrated outside for new kingdom formations.
Kalinga was separate kingdom which is mentioned as an ancient Indian (Bharata Varsha) kingdom, along with the Vodhas and again along with the Kiratas residing in the east, at (6,9)
The five royal lines of Anga, Vanga, Udra (present Odisa), Pundra and Suhma were born from the adopted sons of king Vali. This Vali's kingdom Kalinga was either Magadha Kingdom or some kingdom close to it. There existed a kingdom to the south of Magadha as per many Puranas. King Vali seems to be an king, like the famous king Mahabali, who was also known as Vali or Bali. The five royal sons were actually the sons of the sage Dīrghatamas. Dīghatamas was a sage born in the race of Gautama and Angiras. He was also known as Gautama. His eldest son also was known as Gautama.(1,104).
Though Dīrghatamas was a great sage he was blind. He was cast away by his sons and wife who threw him into river Ganges in a raft. King Vali saved him. Knowing who he was the childless king chose him to raise offspring upon the queen, according to the ordinances of those times. Thus was born the famous five kings. After their names five countries were formed. It is after their names that their dominions have come to be called Anga, Vanga, Udra, Pundra and Suhma (1,104)
Gautama's abode was in Girivraja, the capital of Magadha. Gautama begat on the Sudra woman Ausinari (the daughter of Usinara) the royal sage Kakshivat and the other five celebrated sons. These five monarchs used to visit Gautama in his abode. (2,21)
Kalinga King attended the swayamvara of Draupadi, along with Chandrasena.
Sahadeva brought under his subjection and exacted tributes from the Paundrayas (or Pandya Kingdom ?) and the Dravidas along with the Udrakeralas and the Andhras and the Talavanas, the Kalingas, and the Ushtrakarnikas, and also the delightful city of Atavi and that of the Yavanas. (2,30)
Dantapura, now known as Puri city of Odisha, was mentioned as the capital of Kalinga in the epic Mahabharata (5:23). Sahadeva, the Pandava general had visited this city. Kalinga is mentioned to have another capital named Rajapura. Dantapura was conquered by Sahadeva (5,23).
Karna conquered and brought under subjection all the kings inhabiting the Himavat, and made them pay dues. Then descending from the mountain and rushing to the east, he reduced the Angas, and the Bangas, and the Udras, and the Mandikas, and the Magadhas. the Karkakhandas; and also included with them the Avasiras, Yodhyas, and the Ahikshatras. (3,252)
Kalinga king Srutayus, attended the event of Yudhishthira entering his new palace at Indraprastha, along with Jayasena the king of Magadha.
King Bhagadatta seems to have sway over all the eastern kingdoms including Pundra, Suhma, Vanga and Kalinga. Anga kingdom was ruled by his friend Karna and Vrihadvala was the king of Kosala Kingdom, his another friend.
King Bhagadatta of Pragjyotisha accompanied by all Mlechcha tribes inhabiting the marshy regions on the sea-shore; and many mountain kings, and king Vrihadvala; and Vasudeva the king of the Paundrayas] and Kalinga came to the sacrifice. Similarly the Akastha and Kuntala and the kings of the Malavas and the Andhrakas; and the Dravidas and the Singhalas also came. (2,33). Kalinga king was mentioned as a charioteer at (2,43). Kalingas have brought tribute to the king Yudhishthira along with other kings like the Vangas, the Magadhas, the Tamraliptas, the Supundrakas, the Dauvalikas, the Sagarakas. (2,51)
Duryodhana married the daughter of Chitrangada, who was a Kalinga king, with the capital at Rajapura. This was different from the south Kalinga kingdom, with the capital at Dantapura vanquished by Sahadeva.
Once on a time many kings repaired to a self-choice at the capital of Chitrangada, the ruler of the country of the Kalingas. The city full of opulence, was known by the name of Rajapura.
Arjuna visited all the regions of sacred waters and other holy palaces in Kalinga during his 12-year-old pilgrimage, travelling the whole of ancient India. (1,127)
Pandavas, during their 12 year exile from their kingdom, set for a pilgrimage travelling the whole of ancient India, guided by sage Lomasa.
Pandavas started from the river Kausiki (now known as Kosi in Bihar) and repaired in succession to all the sacred shrines. They came to the sea where the river Ganges falls into it; and there in the centre of five hundred rivers, performed the holy ceremony of a plunge. Then they proceeded by the shore of the sea towards the land where the Kalinga tribes dwell. Through it passeth the river Vaitarani (now known as river Baitarni in Odisha) (3,114)
Drupada, the father in law of the Pandavas and the king of Panchala, made a list of kings to be summoned to assist the Pandavas in the Kurukshetra War
In the list is mentions Srutayus, with other Kalinga kings, Samudrasena (Vanga king) etc. (5,4).
Kalingas were mentioned as allied to Kauravas at many places like at (5-62,95). Kalinga king Srutayudha also known as Srutayus and Srutayush, was one among the generals in the Kaurava army.(6,16). The generals of Kaurava army were:-
The battle of Kalingas is mentioned at various places (6-17,56,70,71,88,118), (7-4,7,11,20,44,72,90,118,138,152,191) (8-5,8,17,22) (9,33). The prominent among them was their battle with Pandava Bhima, which proved fatel to all the Kalinga heroes. (6-53,54), (8,70)
Then king Duryodhana urged the ruler of the Kalingas supported by a large division, for the protection of Bharadwaja’s son, Drona. Then that terrible and mighty division of the Kalingas rushed against Bhima. And then commenced a fierce battle between the Kalingas and the high-souled Bhima. (6,53).
The mighty king of the Kalingas, Srutayush, accompanied by a large army advanced towards Bhima’s car. The ruler of the Kalingas with many thousands of cars, supported by Ketumat, the son of the king of the Nishadas, with 10000 elephants and the Nishada army, surrounded Bhimasena, on all sides. Then the Chedis, the Matsyas, and Karushas, with Bhimasena at their head, with many kings impetuously rushed against the Nishadas. Terrific was the collision that took place between the few and many, between the Chedis on the one side and the Kalingas and the Nishadas on the other. The Chedis, abandoning Bhima, turned back. But Bhima, encountering all the Kalingas, did not turn back. Bhima, staying on his car whose steeds had been slain, hurled at Sakradeva, the son of the Kalinga King Srutayush, a mace made of the hardest iron. And slain by that mace, the son of the ruler of the Kalingas, from his car, fell down on the ground, with his standard and charioteer. Later he slew Bhanumat, the prince of Kalingas, by ascending the back of his elephant and cutting his body in half, with sword. Bhima drawing his bow slew the ruler of the Kalingas, Srutayush, with seven shafts made wholly of iron. And with two shafts he slew the two protectors of the car-wheels of the Kalinga King. And he also dispatched Satyadeva and Satya. (6,54)
Karna rebukes Shalya during the Kurukshetra War, and his race, and all the other tribes who had slightest similarity with Shalya's tribe.
Siva is worshipped in the country of the Kalingas in the form of a tiger. Siva has an image in the country of the Kalingas that is called Vyaghreswara. (13,17)
It is in consequence of the absence of Brahmanas from among them that the Sakas, the Yavanas, the Kamvojas and other Kshatriya tribes have become fallen and degraded into the status of Sudras. The Dravidas, the Kalingas, the Pulandas, the Usinaras, the Kolisarpas, the Mahishakas and other Kshatriyas, have, in consequence of the absence of Brahmanas from among their midst, become degraded into Sudras. (13,33)
The passage gives signs of the cultural differences prevailed in Kalinga with the mainstream culture prevailed in the plains of the Ganges.(13,33)
...in the Mahabharata wherein the Kalingas have been included amongst the tribes...