Method and apparatus are disclosed for activation of valet mode for vehicles. An example vehicle system includes a remote near-field communication (NFC) device and a vehicle. The vehicle includes an engine, a cabin, and an interior NFC reader located in the cabin. The vehicle also includes a controller configured to enter a valet mode and authenticate the remote NFC device for the valet mode when the engine is active and the interior NFC reader communicates with the remote NFC device.