The word Yona in Pali and the Prakrits, and the analogue Yavana in Sanskrit, were used in Ancient India to designate Greek speakers. "Yona" and "Yavana" are transliterations of the Greek word for "Ion
Yavana kingdom alongside other locations of kingdoms and republics mentioned in the Indian epics or Bharata Khanda.
The Achaemenid name for Ionian Greeks: Yauna (Old Persian cuneiform: 𐎹𐎢𐎴) in the DNa inscription of Darius the Great, c. 490 BC
Territories "conquered by the Dharma" according to Major Rock Edict No.13 of Ashoka (260–218 BCE).
The Khalsi rock edict of Ashoka, which mentions the Greek kings Antiochus, Ptolemy, Antigonus, Magas and Alexander by name (underlined in colour). Here the Greek rulers are described as "Yona" (Brahmi: 𑀬𑁄𑀦, third and fourth letters after the first occurrence of Antigonus in red).
Kalayavana is a king in Hinduism. He is stated to have invaded Mathura with an army of 30 million Yavanas against Lord Krishna.
Yona
…spoken of as equal to the "Svapakas" and the "Grddhras". In Harivamsha , Bramhanda purana And Vishnu purana there is also mention of Yavana King Named Kalyavana who invaded Mathura And Dvaraka With the alliance of Magadha King Jarasandha. Udyogaparva of Mahabharata says that the composite army of the Kambojas…
Kalayavana Surrounds Mathura Page from a Dispersed Bhagavata Purana Series – Brooklyn Museum