Some demonstrative embodiments include apparatuses, systems and/or methods of Neighbor Awareness Networking (NAN) Geo-Fencing. For example, an apparatus may include circuitry configured to cause a Neighbor Awareness Networking (NAN) device to process a plurality of geo-fencing parameters of a geofence from an application on the NAN device; and perform geo-fencing with another NAN device based on the geo-fencing parameters.