Q&A – Nintendo Network
I forgot my Nintendo Network ID. What should I do?
You can check your Nintendo Network ID on your Wii U console or Nintendo 3DS system by following the steps below.
On a Wii U console:
Select the Mii in the top-left corner of the Wii U Menu to open the User Settings screen and display your Nintendo Network ID.
On a Nintendo 3DS system:
From the HOME Menu, open the System Settings and select Nintendo Network ID Settings. The Nintendo Network ID will be displayed on the top screen.
Note: If you do not have a Wii U console or Nintendo 3DS system available, you can check your NNID via this page: Retrieve your Nintendo Network ID