獅子洋隧道係一條鐵路過江隧道，係廣深港客運專線一橛，跨珠江，連接廣州南沙區慶盛站同東莞虎門站。呢條隧道係中國第一條用盾構法施工嘅水下鐵路長隧，雙洞單線，左右線各長10800米，設計速度250km/h。隧道喺小虎瀝（460米）、沙仔瀝（540米）、獅子洋（3300米）等水道底下穿行。2007年11月開工，開工嗰時預計2009年4月竣工，但竣工時間一再推遲。2010年12月10號左線貫通。2011年3月12號，右線貫通，廣深港客運專線獅子洋隧道噉就實現全線貫通。
The Shiziyang Tunnel is a railway tunnel that crosses the Pearl River and connects Qingsheng Station in Nansha District, Guangzhou and Humen Station in Dongguan. This tunnel is China's first underwater railway long tunnel constructed by the shield method, with two holes and a single line, the left and right lines are each 10,800 meters long, and the design speed is 250km/h. The tunnel runs under the waterways of Siu Hu Lek (460 m), Sha Tsai Lek (540 m) and Shiziyang (3,300 m). Construction began in November 2007 and was expected to be completed in April 2009, but completion was repeatedly delayed. On December 10, 2010, the left line was opened. On March 12, 2011, the right line was completed, and the Guangzhou-Shenzhen-Hong Kong passenger dedicated line Shiziyang Tunnel was completed in this way.