Gagra is a town in Abkhazia sprawling for 5 km on the northeast coast of the Black Sea, at the foot of the Caucasus Mountains. Its subtropical climate made Gagra a popular health resort in Imperial Russian and Soviet times.

It had a population of 26,636 in 1989, but this has fallen considerably due to the ethnic cleansing of Georgians in Abkhazia and other demographic shifts during and after the War in Abkhazia (1992-93).

Gagra is the centre of the district of the same name. It is located in the western part of Region of Abkhazia, and river Psou serves as a border with Krasnodar Krai of Russia.

The chief landmarks of Gagra are:

• Ruins of the Abaata Fortress (4th-5th century AD)
• A 6th-century Church of Gagra, said to be the oldest in Abkhazia
• Marlinsky defensive tower (1841)
• 19th-century palace of the Prince of Oldenburg