Apollonia (also called Stavri[2]) is a village in Sifnos, Cyclades, Greece.

It is the capital (chora) and largest village of the island with 869 inhabitants as of the 2011 Greek Census.

[3] It is the head of the homonymous community, which includes the villages Vathy, Kamares, Kastro, Platys Gialos, Kato Petali, Faros and Chrysopigi and has a total population of 1,898 residents (2021).

[2] Apollonia is located on top of three hills in the inner part of Sifnos.

[2] People born in Apollonia include satyric poet and journalist Kleanthis Triantafyllopoulos[4] and Gregory VII of Constantinople.