Churna Island (Urdu: جزیرہ چرنا) is a small uninhabited Pakistani island located in the Arabian Sea, about 9 km (5.6 mi) west of the mouth of the Hub river, at the boundary between the provinces of Balochistan and Sindh. Churna is approximately 1.2 km (0.75 mi) long and 0.5 km (0.31 mi) wide. Churna is mostly used as a firing range by the Pakistan Navy.
Marine life around Churna includes poisonous sea snakes, barracuda, narrow-barred Spanish mackerel, cobia, Dorado, Tuna, angel fish, sea urchin, sea fan, oyster, ray fish and rare green turtle. Pakistan Game Fishing Association (PGFA) holds national angling competitions near Churna. It is the presence of coral reefs around this island that attracts the number of big game fish around it. However, illegal net sizes used by fishing trawlers are destroying this natural treasure.
The area surrounding Churna is popular for scuba diving because of the presence of widely varied marine life and different kinds of coral reef. Some claim that there are more than 60 types of corals found near Churna waters and many new corals started to flourish after the 2005 Indian Ocean tsunami.