Winslow Reef is a submerged coral reef of the southern Cook Islands, located 133 kilometres (83 miles) northwest of Rarotonga, at 20°38′S 160°56′W / 20.633°S 160.933°W. It is a shallow platform reef. No major expeditions to explore Winslow Reef have taken place.
World Atlas of Coral Reefs, by Mark D. Spalding, Corinna Ravilious, Edmund P. Green, University Presses of California, September 2001, ISBN 0-520-23255-0, ISBN 978-0-520-23255-6
