Avlon or Avlonas (Greek: Αυλών/Αυλώνας) is a former municipality in Euboea, Greece. Since the 2011 local government reform it is part of the municipality Kymi-Aliveri, of which it is a municipal unit. The municipal unit has an area of 143.406 km. In 2021 its population was 4,027. The seat of the municipality was in Avlonari.

Subdivisions

The municipal unit Avlon is subdivided into the following communities (constituent villages in brackets):

• Achladeri (Achladeri, Kalamos, Korasida, Perivolia, Sykies)
• Agios Georgios
• Avlonari (Avlonari, Chania, Dafni, Elaia, Lofiskos)
• Neochori
• Oktonia (Oktonia, Agios Merkourios, Mourteri)
• Orio (Orio, Myrtea)
• Orologi (Orologi, Agia Thekla, Prinaki)
• Pyrgi