Gardiki (Greek: Γαρδίκι), older form Gardikion, is a Greek toponym derived from proto-Slavic Gordьkь, "town, fortified settlement" (cf. Grad (toponymy)), and may refer to the following villages in Greece and Albania:

• Greek for Kardhiq, a village in southern Albania
• Gardiki Omilaion, a village in Phthiotis, part of Spercheiada
• Gardiki, Thesprotia, a village in Thesprotia, part of Souli
• Gardiki, Filiates, a village in Thesprotia, part of Filiates
• Gardiki, Phthiotis, a village in Phthiotis regional unit, now named Pelasgia
• Gardiki, Trikala, a village in the Trikala regional unit
• Mega Gardiki, a village in the Ioannina regional unit, part of Pasaronas
• Gardiki Castle, Corfu, castle on Corfu island built in the 13th century AD
• Gardiki Castle, Arcadia, castle near Chirades, municipality of Megalopoli
• An older name for the village of Anavryto, Arcadia
• Gardikaki ("Little Gardiki"), an older name for the village of Oiti in Phthiotis
• Palaiogardiki ("Old Gardiki"), site of the ancient city of Pelinna, in Thessaly