Punaluʻu Beach (also called Black Sand Beach) is a beach between Pahala and Naalehu on the Big Island of the U.S. state of Hawaii. The beach has black sand made of basalt and created by lava flowing into the ocean which explodes as it reaches the ocean and cools. This volcanic activity is in the Hawaiʻi Volcanoes National Park. Punaluʻu is frequented by endangered hawksbill and green turtles, which can often be seen basking on the black sand.

Located between Hawaii Volcanoes National Park and the small town of Naalehu, Punaluu Black Sand Beach's jet black shores are an unforgettable sight. Coconut palms fringe the upper edge of sand and you may also discover large honu, or Hawaiian Green Sea turtles, basking on the beach. Although it may be tempting, do not touch these protected turtles and do not remove any black sand from the beach. Punaluu Black Sand Beach is one of the most famous black sand beaches in Hawaii.