Ġgantija (English pronunciation: /ɡænˈtiːə/, Maltese: [dʒɡɐnˈtiːjɐ], "Giants' Tower") is a Neolithic, megalithic temple complex on the Mediterranean island of Gozo. The Ġgantija temples are the earliest of a series of megalithic temples in Malta. Their makers erected the two Ġgantija temples during the Neolithic Age (c. 3600-2500 BC), which makes these temples more than 5500 years old and the world's second oldest manmade religious structures, after Göbekli Tepe. Together with other similar structures, these have been designated a UNESCO World Heritage Site, the Megalithic Temples of Malta.

The temples were possibly the site of a Fertility cult; archeologists believe that the numerous figurines and statues found on site are connected with that cult. According to local Gozitan folklore, a giantess built these temples and used them as places of worship.

The Ġgantija temples stand at the end of the Xagħra plateau, facing towards the south-east.

This megalithic monument is in fact two temples, built side by side and enclosed within a boundary wall. The southerly one is the larger and elder, dating back to approximately 3600 BC. It is also better preserved. The plan of the temple incorporates five large apses, with traces of the plaster that once covered the irregular wall still clinging between the blocks.