1. Mandarin Chinese: Over 1 billion native speakers
2. Hindi: Over 600 million native speakers
3. English: Over 370 million native speakers
4. Spanish: Over 530 million native speakers
5. Arabic: Over 370 million native speakers
6. Bengali: Over 265 million native speakers
7. Portuguese: Over 250 million native speakers
8. Russian: Over 150 million native speakers
9. Japanese: Over 125 million native speakers
10. Punjabi: Over 100 million native speakers
It's important to note that these figures can vary slightly depending on the source and how "native speaker" is defined.