Which is the world largest selling biscuits?

It's difficult to definitively say which biscuit is the world's largest selling, as global sales data for individual biscuit brands is not readily available.

However, some of the strong contenders for the title include:

* Oreo: A global icon, Oreo is a consistently popular cookie in many countries.

* Parle-G: This Indian biscuit brand is a massive seller within India and has significant presence in other South Asian markets.

* Biscuits Rosy: Another popular brand in India and other South Asian countries, known for its affordable price point.

* Tuc: This popular cracker brand from Mondelez enjoys significant global popularity.

Factors to consider:

* Market Size: Some regions like Asia have significantly larger biscuit consumption than others.

* Definition of "biscuit": The definition of a biscuit varies across regions, so some popular cookies might not be considered "biscuits" in all markets.

* Data Availability: Accurate sales data for individual brands is often proprietary information.

Conclusion:

While there is no definitive answer, the biscuits mentioned above are all major players in the global market and could be considered among the best-selling.