Helios, more fully the Helios New Encyclopedic Dictionary (Greek: Νεώτερο Εγκυκλοπαιδικό Λεξικό Ηλίου or: Νεώτερον Εγκυκλοπαιδικόν Λεξικόν Ήλιος), is a general knowledge Greek encyclopaedia. Its publication commenced in 1945 while its second edition was completed in 1960, comprising 18 volumes.

• List of Greek encyclopedias

This article about a reference book is a stub. You can help Wikipedia by expanding it.

• v
• t
• e

This Greece-related article is a stub. You can help Wikipedia by expanding it.

• v
• t
• e

This article about an encyclopedia is a stub. You can help Wikipedia by expanding it.

• v
• t
• e