1. Mandarin Chinese: 1.13 billion speakers
2. Hindi: 602 million speakers
3. English: 379 million speakers
4. Spanish: 534 million speakers
5. Arabic: 375 million speakers
6. Bengali: 265 million speakers
7. Portuguese: 258 million speakers
8. Russian: 154 million speakers
9. Japanese: 128 million speakers
10. Punjabi: 125 million speakers
Important Note: This list only considers native speakers. If you include people who speak a language as a second language, the order might change.