It is debatable! Historians believe that languages must have originated some 3000 and 10,000 years ago, but this is just an assumption, as there is no strong evidence to prove it. From Asia there are Sanskrit, Mandarin Chinese and Tamil. From west there are Hebrew, Latin, Greek, Old Irish, Gothic and Lithuanian. Scriptures older than 5000 years have been found written in Sanskrit and Tamil and the most famous book of all The Holy Bible was first written in Hebrew. So this makes it quite confusing to determine the oldest language in the world. Even the languages we know today dating back to thousands of years have undergone many changes and evolutionary processes. There has to be extended research to answer this question precisely. Having found the so called proto-language ,which is the common ancestor of the languages that form a language family such as Proto-Indo-European, Proto-Uralic, and Proto-Dravidian is a step forward to further search the topic.

Hebrew! Ha ha ha ha ha ha ha!

cavemanese :P

if what you meant is a regularly spoken language, I agree with Cherry-san now. But if what you meant is the very old language, I could say "body language" It's already been used since the prehistoric age by prehistoric humans.

Having come across this article Cavemen 'may have used language' about the discovery of the language gene FOXP2 in Neanderthal might lead to acknowledging Panther's opinion about Cavmanese as a matter of fact not a joke ;) From the article: " They are typically portrayed as primitive brutes capable only of grunting, but new research now suggests Neanderthals may have whiled away the hours in their caves in conversation. Scientists who have been trawling through the DNA found in Neanderthal bones have discovered that the now extinct species had a “language gene” that is only found in modern humans. Their controversial findings create the tantalising possibility that Neanderthals were in fact capable of speech much like humans and communicated with each other through their own language. As language is seen as one of the key cornerstones that has set humans apart from other animals and allowed sophisticated cultures to develop, many anthropologists now believe it may have allowed Neanderthals to have their own culture." If interested read more here: http://www.telegraph.co.uk/news/uknews/1566748/Cavemen-may-have-used-language.html