Does Netflix have Ben 10 series?

The first season of Ben 10 is on Netflix. This suggests that more will be added in the future. But if you want to watch each and every episode it might be best to just us Youtube where you'll find just everything.

It has a dedicated Ben 10 channel there so it isn't just the actual series that you can enjoy on Youtube. If your parents have a Netflix account, then watch the first season on Netflix and watch out for information for further seasons that might well be added soon.