Do you say what are your parents names or is names?

The grammatically correct way to ask about someone's parents' names is:

"What are your parents' names?"

Here's why:

* "Parents'" is the possessive form of "parents," indicating that the names belong to them.

* "Are" is the correct verb form for plural nouns like "names."

You could also say:

* "What are the names of your parents?" This is a slightly more formal way of phrasing the question.

It's important to remember that using proper grammar makes your communication clear and understandable.