Chalcis (Greek: Χαλκίς) is a city on the Euripus Strait between the island of Euboea and the Greek mainland.

Other cities of Antiquity:

• Chalcis (Aeolis), a town of ancient Aeolis, now in Turkey
• Chalcis (Aetolia), a town of ancient Aetolia
• Chalcis (Elis), a town of ancient Elis
• Chalcis (Epirus), a town of ancient Epirus
• Chalcis ad Belum, modern Qinnasrin, Syria
• Chalcis (Thrace), modern Inecik in European Turkey
• Chalcis ad Libanum, possibly modern Anjar, Lebanon

It can be also:

• Chalcis Mountain, near the Chalcis in Aetolia
• Chalcis Province, a province in Euboea, Central region in Decentralized Administration of Thessaly and Central of Greece
• Chalcis (wasp), a genus of Chalcid wasp
• Chalcis (mythology), the naiad.

...