There's no World Official Language. English seems to be the lingua franca of our days but not all people agree. The official languages of the United Nations are English, French, Arabic, Russian, Chinese and Spanish.

There isn't an Official One , English is the most use in business , technology , modern Sciences , also Chinese has wide- spreading about 2 billion person speak it all over the world , Muslims and Arabs just love the Arabic Language cez it is the Language of our Holy Book '' The Holy Quran'' And God promise to preserve and save this Holy Book till the day of the judgement , so They believe that Arabic is the most strong Language , beside that it was the Mother Language and all of the Other Language came from it , it was the Language Adam '' the Frist Creation in the Earth'' , And the modren science currently proof that '' The Science of the Universe linguistics'' in London University . Thank you so much

As far as I know, the official languages of the world are English. Spanish, Arabic and French. This are the most spoken languages in the world.

english, spanish, arabic, russian, chinese and french

If you are in business/ IT/ commerce/International relations etc it is English. It depends on what country you live in & your ambition in life as to whether you need English or not.