The Chief of the Hellenic Navy General Staff (Greek: Αρχηγός του Γενικού Επιτελείου Ναυτικού, romanized: Archigós tou Genikoú Epiteleíou Naftikoú, abbrev.

Α/ΓΕΝ) is the head of the Hellenic Navy General Staff and commander of the Hellenic Navy.

The position is customarily held by a three-star flag officer (vice admiral).

As part of Greece's membership in NATO, from 1967 until 1999 the Chief of the HNGS was also commander of NATO's COMEDEAST.