How many Japanese dialects are there in the world?

It's not accurate to say there are "Japanese dialects" in the world. Japanese is a single language with a number of regional variations called dialects.

While there are many regional variations in pronunciation, vocabulary, and grammar, they are generally mutually intelligible. The number of dialects is a bit fuzzy, but linguists often estimate there to be around 10-15 major dialects.

Here's why it's important to use the correct terminology:

* Dialect refers to variations within a single language.

* Language is a system of communication used by a community of people.

So, there isn't a different "Japanese" language spoken in different parts of the world. There is just one Japanese language with regional variations.