Q&A – Nintendo Network
I forgot my Nintendo Network ID. What should I do?
You can check your Nintendo Network ID on a game system using one of the following methods.
On a Wii U console:
Tap the Mii character on the top left corner of the Wii U Menu. The Nintendo Network ID will be shown on the User Settings screen.On a linked system in the Nintendo 3DS family:
From the HOME Menu, tap System Settings, and then tap Nintendo Network ID Settings. The Nintendo Network ID will be displayed on the top screen.Note: If you do not have your system handy, you can also check your ID by entering the required information after following the link below.
Retrieve your Nintendo Network ID.