Syrna is a mountain village and a community in the municipal unit of Trikolonoi, western Arcadia, Greece. Syrna is situated on a mountain slope above the right bank of the river Alfeios, at about 800 m elevation. In 2011 Syrna had a population of 60 for the village and 62 for the community, which includes the village Ano Kalyvia. Syrna is 2 km northwest of Palamari, 4 km southeast of Elliniko, 6 km northeast of Karytaina and 6 km southeast of Stemnitsa.