Gomanta was a kingdom mentioned in the epic Mahabharata. It was an extension of the kingdom of Yadavas at Dwaraka. It is identified to be the Goa state of India, situated in the western coast. It was the southern most extend of the region, occupied by the Yadava clans, finding explicit mention in Mahabharata.
In popular culture
Today the highest civilian honour of the state of Goa is called Gomant Vibhushan. It is given annually by Government of Goa since 2010.
References
Gomanta Kingdom Wikipedia(Text) CC BY-SA