Tseung Kwan O Tunnel () is a 900-metre tunnel beneath Ma Yau Tong in Hong Kong. The tunnel was opened on 9 November 1990. Part of Route 7, it links Sau Mau Ping, Kwun Tong, Kowloon and the Tseung Kwan O New Town, Sai Kung District, the New Territories. It was used by 80,385 vehicles daily in 2011. The flat toll fee for the tunnel is HK$3 since opening. The toll fee has been waived since the opening of Tseung Kwan O–Lam Tin Tunnel on 11 December 2022. This tunnel is connected to Tseung Kwan O Road on the Kowloon side along with its toll plaza, and Tseung Kwan O Tunnel Road on the Tseung Kwan O side. Tseung Kwan O Tunnel is currently managed by Greater Lucky (H.K.) Company Limited. See also Transport in Hong Kong List of tunnels and bridges in Hong Kong References Sau Mau Ping Tseung Kwan O Ma Yau Tong Road tunnels in Hong Kong Route 7 (Hong Kong) Tunnels completed in 1990 1990 establishments in Hong Kong