Tamil (5000 years old)
Spoken by 78 million people and official language in Sri Lanka and Singapore, Tamil is the oldest language in the world. It is the only ancient language that has survived all the way to the modern world. Part of the Dravidian family, which comprises of some native southern and eastern Indian languages, Tamil is the most widely spoken language in the state of Tamil Nadu and is also one of the official languages of India. Inscriptions dating back to the 3rd century B.C have been found in Tamil.