The Gulf of Sidra is a body of water in the Mediterranean Sea of the northern coast of Libya; it is also known as Gulf of Sirte.

From time to time, Libya has asserted that the entire gulf is Libyan territory, though other countries hold to the international standard of a 12-mile (22.2 km) territorial limit from the country's shore.

See also

• Second Battle of Sirte, World War II naval battle between Regia Marina and Royal Navy.
• Gulf of Sidra incident (1981), US-Libyan air engagement over territorial claim, two Libyan jets shot down
• Gulf of Sidra incident (1989), US-Libyan air engagement over territorial claim, two Libyan jets shot down