I found on the internet:
India is derived from Indus(hindu in Persian)
The name appeared in the writings of ancient Greek and Latin authors (Herodot, Strabo, Tacitus and others). The arabs borrowed their name for India (Hind) from the Greeks
source:
http://72.14.207.104/search?q=cache:dJTWwfEBFCEJ:answers.yahoo.com/question/index%3Fqid%3D20060723023425AAERQ1y+neethu,+wikipedia&hl=en&gl=ca&ct=clnk&cd=3