English, of all languages, is spoken the most in the world.
English is the official or principal language of 27 large countries, plus 35 small countries, and is one of the official languages in India and South Africa. This makes 64 countries where official communication is in English. There are between 500,000,000 and 1,000,000,000 NATIVE English speakers. In many other countries, almost everyone can speak English to some degree, especially in the cities. So, the TOTAL number of English speakers is much higher.