It's actually not possible to know, since all Indian languages are older than writing.
sanskrit
Tamil
Indian is not a language.Chinese writing dates from about 5000 years ago.The oldest writing in India is the Brahmi script, which dates from about 2500 years ago.
the oldest known indian cultural periiod was the mississippian period
As my knowledge the tamil is oldest language among dravidian language
Tamil is considered to be the oldest language with current
Aramaic is an ancient Semitic language that dates back several thousand years, but it is not considered the oldest language in the world. Languages like Sumerian, Egyptian, and Sanskrit are among the oldest known languages with detailed records of their usage in ancient texts and inscriptions.
The oldest word in the English language is town.
sanskrit is the oldest language and it is still in use in HINDI rituals
Indian ocean
tamil language
Telugu..!