Smaragda Karydi (Greek: Σμαράγδα Καρύδη) is a Greek actress. She came into prominence playing the role of Dahlia in the TV series Sto Para Pente.

Smaragda was born on 9 August 1969, and is the daughter of actors Dinos Karydis (whom she later starred with in Fila ton vatraho sou) and Tzoulia Argyropoulou.