Odra was a country located in the northern Orissa

Orissa

Orissa , officially Odisha since Nov 2011, is a state of India, located on the east coast of India, by the Bay of Bengal. It is the modern name of the ancient nation of Kalinga, which was invaded by the Maurya Emperor Ashoka in 261 BC. The modern state of Orissa was established on 1 April...

. This kingdom was mentioned in the epic Mahabharata

Mahabharata

The Mahabharata is one of the two major Sanskrit epics of ancient India and Nepal, the other being the Ramayana. The epic is part of itihasa....

. Odras were neighbours to the Vangas

Vanga Kingdom

Vanga orBengal was a kingdom located in the eastern part of the Indian Subcontinent, comprising part of West Bengal, India and present-day modern Bangladesh. It was a seafaring nation of Ancient India.- References in Mahabharata :...

. It is believed that the Oriya language

Oriya language

Oriya , officially Odia from November, 2011, is an Indian language, belonging to the Indo-Aryan branch of the Indo-European language family. It is mainly spoken in the Indian states of Orissa and West Bengal...

 and the state Orissa

Orissa

Orissa , officially Odisha since Nov 2011, is a state of India, located on the east coast of India, by the Bay of Bengal. It is the modern name of the ancient nation of Kalinga, which was invaded by the Maurya Emperor Ashoka in 261 BC. The modern state of Orissa was established on 1 April...

 got their names derived from the name "Odra".

Reference in Mahabharata

Only a single reference of Odra is found in Mahabharata

Mahabharata

The Mahabharata is one of the two major Sanskrit epics of ancient India and Nepal, the other being the Ramayana. The epic is part of itihasa....

. The Odras were mentioned along with the Vangas

Vanga Kingdom

Vanga orBengal was a kingdom located in the eastern part of the Indian Subcontinent, comprising part of West Bengal, India and present-day modern Bangladesh. It was a seafaring nation of Ancient India.- References in Mahabharata :...

, Angas

Anga Kingdom

Anga was a kingdom ruled by non-Vedic rulers. Anga king Lomapada was a friend of Kosala king Dasaratha. Kosala Princess Santha, elder to Raghava Rama, lived as the daughter of Lomapada, since he was childless. Duryodhana established Karna as the ruler of Angas. It is believed that there were many...

 and Paundras

Pundra Kingdom

Pundra was an eastern kingdom located in West Bengal, Bangladesh and Purnia . A Pundra king challenged Vasudeva Krishna by imitating his attributes. He called himself Paundraka Vasudeva. He was later killed by Vasudeva Krishna in a battle...

 as bringing tribute for Yudhisthira

Yudhisthira

In the great Hindu epic Mahabharata, Yudhisthira , the eldest son of King Pandu and Queen Kunti, was king of Indraprastha and later of Hastinapura. He was the leader of the Pandava side in the Kurukshetra War...

 for his Rajasuya

Rajasuya

Rajasuya was a sacrifice, described in detail in the Mahabharata, performed by the ancient kings of India who considered themselves powerful enough to be an emperor...

 sacrifice (3,51).

There is a mysterious mention of the name Udrakeralas

Kerala Kingdom

This article is about the Kingdom of Kerala in Indian epic literature. For the present-day region, see Kerala, For the historical kingdom, see Chera dynasty...

 in Mahabharata

Mahabharata

The Mahabharata is one of the two major Sanskrit epics of ancient India and Nepal, the other being the Ramayana. The epic is part of itihasa....

. It is not known if the word Udra in the composit word Udra-Keralas has any relations with Odra.