Dikaia (, ) is a village in the northern part of the
Evros regional unit in Greece. Dikaia was the seat of the former municipality of
Trigono, and is part of the municipality
Orestiada since 2011. In 2001 its population was 797 for the village and 1,177 for the municipal district, which includes the villages Dilofos, Krios and Palli. It is located on the right bank of the river
Evros, where it forms the border with
Bulgaria. It is about 15 km southeast of
Svilengrad, Bulgaria, and 25 km west of
Edirne, Turkey. Dikaia is bypassed by the
Greek National Road 51/
E85 (Alexandroupoli - Soufli - Orestiada - Ormenio - Svilengrad). It is served by a railway station on the line from
Didymoteicho to
Ormenio.
