Here are some of the most commonly cited languages with over 100 million speakers:
* Mandarin Chinese (over 1 billion)
* Hindi (over 600 million)
* English (over 1.5 billion)
* Spanish (over 500 million)
* Arabic (over 400 million)
* Bengali (over 250 million)
* Russian (over 250 million)
* Portuguese (over 250 million)
* Indonesian (over 250 million)
* French (over 300 million)
It's important to note that these figures are estimates and can vary depending on the criteria used to define speakers and languages.