Wong Nai Chung Gap () is a geographic gap in the middle of Hong Kong Island in Hong Kong. The gap is between Mount Nicholson and Jardine's Lookout behind Wong Nai Chung (Happy Valley). Five roads meet at the Gap: Wong Nai Chung Gap Road, Tai Tam Reservoir Road, Repulse Bay Road, Deep Water Bay Road and Black's Link. It is a strategic passage between the north and south of the island, though less so today since the opening of the Aberdeen Tunnel.