How do you say Hello my name is Nancy in french?

There are a couple of ways to say "Hello, my name is Nancy" in French, depending on the level of formality:

Formal:

* Bonjour, je m'appelle Nancy. (This is the most common and polite way to introduce yourself.)

Informal:

* Salut, je m'appelle Nancy. (This is a more casual greeting, suitable for friends and family.)

You can also use "Coucou" (a very informal greeting) instead of "Bonjour" or "Salut".

It's important to note that the French language has different levels of formality, so choosing the right greeting depends on the context and your relationship with the person you are talking to.