Porlier Bay (Bulgarian: залив Порлиер, romanized: zaliv Porlier, IPA: [ˈzalif porliˈɛr]) is the 3 km wide bay indenting for 1.6 km the north coast of Ioannes Paulus II Peninsula on Livingston Island in the South Shetland Islands, Antarctica. It is entered between Punta del Medio and Black Point, and includes Spiller Cove on the southeast. The area was visited by early 19th-century sealers.
The feature is named after Brigadier Rosendo Porlier y Asteguieta (1771–1819), commander of the Spanish naval squadron whose flagship San Telmo sank off the island with 644 men on board including Porlier in September 1819. Remnants of the ship were found subsequently at the bay.