King Bhumaka was a western Satrap ruler of the Kshaharata clan. We have no detailed information about the rule of Bhumaka. On the basis of a number of coins of Bhumaka found usually in the coastal regions of Gujarat and Kathiawar and also sometimes in Malwa it is supposed that these areas were ruled over by him.
It is believed that King Bhumaka was the father of Nahapana the Great.
His coins had bi-lingual legends in Kharosthi and Brahmi. Kharosthi later on fell into disuse. “It is likely”, remarks N.K. Sastri, “that during the Kushana over lordship of northern and western India, Bhumaka was entrusted with the task of administering the westernmost conquests of the Kushanas. On the other hand, he may have been already ruling there as the Satrap of the Pahlavas when the Kushanas made themselves masters of this region”.