Gary Houston

@rauschma supposedly the most spoken by first language are 1. Mandarin Chinese 2. Spanish 3. English ... and you missed the first two.

https://en.wikipedia.org/wiki/List_of_languages_by_number_of_native_speakers

Edit: omitted the first two and included nos. 21 and 22. "Other" would get a lot more votes if poll-takers were representative of the global population.