Filfla is a small, barren, uninhabited islet 5 km south of Malta, and is the most southerly point of Maltese Archipelago.

It has an area of just 60,000 m² and is a crumbling flat-topped limestone plateau surrounded by 60 metre high cliffs. The only known permanent structure on it was a chapel built inside a cave in 1343, and which was destroyed by an earthquake in 1856 that also sank part of the island. Until 1971 the island was used for target practice by the Royal Navy and Royal Air Force. It became a bird reserve in 1980, and in 1988 further controls were added prohibiting fishing within a nautical mile around it as not all the British ordnance detonated upon impact.

The name comes from filfel, the Arabic for a peppercorn.