Connecting NES Controller to Wii: Adapters and Homebrew Solutions
No native support. Wii uses Bluetooth (Wiimote) / GameCube ports / Classic Controller port. NES uses proprietary 7-pin.
Adapters (Hardware)
8BitDo NES Classic Edition Controller (Bluetooth): Looks like NES pad, pairs to Wii (via 8BitDo receiver dongle) or Switch/PC. Best modern feel.
Mayflash NES/SNES to Wii U / Wii Adapter (W010): Plugs into Wii Remote expansion port → NES/SNES controller → Works as Classic Controller. Supports Turbo.