The Hardest Languages to Learn in the World WorldAtlas. 25 rows    The most common of them is Mandarin which is the most spoken language in the world. English.

The Hardest Languages to Learn in the World WorldAtlas
The Hardest Languages to Learn in the World WorldAtlas from danatranslation.com

4. Chinese (Mandarin) Mandarin Chinese is one of the most difficult languages to learn, yet it is also one of the most widely spoken native languages on the planet, with over.