Royal Hellenic Navy rank insignia

Officer Ranks

Equivalent NATO code	OF-10		OF-9		OF-8		OF-7		OF-6		OF-5		OF-4		OF-3		OF-2		OF-1						OF(D) and student officer
Kingdom of Greece	No equivalent								No equivalent																Unknown
			Admiral		Vice Admiral		Rear Admiral				Captain		Commander		Lieutenant-Commander		Lieutenant		Sub-Lieutenant			Ensign

Other Ranks

Equivalent NATO Code	OR-9						OR-8		OR-7		OR-6						OR-5						OR-4				OR-3		OR-2						OR-1
Kingdom of Greece	No equivalent																																		No insignia
									Master Chief Petty Officer		Chief Petty Officer						Petty officer, 1st class						Petty officer, 2nd class				Leading Rate		Able Seaman						Seaman

Officer Ranks

Equivalent NATO code	OF-10		OF-9		OF-8		OF-7		OF-6		OF-5		OF-4		OF-3		OF-2		OF-1						OF(D) and student officer
Kingdom of Greece																									Unknown
	Admiral of the Fleet1		Admiral		Vice Admiral		Rear Admiral		Commodore		Captain		Commander		Lieutenant-Commander		Lieutenant		Sub-Lieutenant			Ensign

¹ The rank was instituted in 1939 for King George II, and was held only by his successors, King Paul and King Constantine II.

Other Ranks

Equivalent NATO Code	OR-9						OR-8		OR-7		OR-6						OR-5						OR-4				OR-3		OR-2						OR-1
Kingdom of Greece																																			No insignia
	Warrant Officer Class 1						Warrant Officer Class 2		Master Chief Petty Officer		Chief Petty Officer						Petty officer, 1st class						Petty officer, 2nd class				Leading Rate		Able Seaman						Seaman