The most used language in the world is English. It serves as a global lingua franca, facilitating communication across diverse cultures and languages. With over 1.5 billion speakers worldwide, a significant number of whom are non-native speakers, English is the primary language in international business, diplomacy, science, and technology. Its widespread usage in entertainment and social media further solidifies its position as the most popular language. Other languages like Mandarin Chinese and Spanish also have vast numbers of speakers, but English's global influence and prevalence in many nations make it the most used language.