Chinese (Mandarin) 1,917,000,000
Spanish 406,000,000
English 335,000,000
Hindi 260,000,000
Arabic 223,000,000
Portuguese 202,000,000
Bengali 193,000,000
Russian 162,000,000
Japanese 122,000,000
Javanese 84,300,000
Source: Ethnologue: Languages of the World 17th edition (Ethnologue is a comprehensive reference work cataloguing all of the world’s known living languages, since 1951.)
