1. Mandarin (1 billion+) [number of speakers] 2. English (508 million) 3. Hindustani (497 million) 4. Spanish (392 million) 5. Russian (277 million) 6. Arabic (246 million) 7. Bengali (211 million) 8. Portuguese (191 million) 9. Malay-Indonesian (159 million) 10. French (129 million) http://listverse.com/2008/06/26/top-10-most-spoken-languages-in-the-world/

the most popular language is English the max speakers language is Chinese

the most popular language is English ( international language ) the most speakers language is Chinese ( many people learn it )

klingon

Most widely spoken - English & Most native speakers - Mandarin Chinese