Each officer rank in the navy of a NATO country may be compared with the ranks used by any military service in other NATO countries, under a standardized NATO rank scale. This is useful, for instance, in establishing seniority amongst officers serving alongside each other within multinational command structures.
The grades, prefixed OF- (commissioned officers) and WO- (warrant officers) were established in the document STANAG 2116, formally titled NATO Codes for Grades of Military Personnel.
In many navies, two separate ranks fall within the OF-1 grade. These particular ranks, known by various names in different navies, are commonly given the less formal grades of "OF-1a" (more senior) and "OF-1b" (less senior).
Warrant officers rank below officers and above enlisted servicemen. In the United States, Chief Warrant Officers are commissioned officers.
| NATO rank | WO-5 | WO-4 | WO-3 | WO-2 | WO-1 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
 United States Navy |  |  |  |  |  | |||||
| Chief warrant officer 5 | Chief warrant officer 4 | Chief warrant officer 3 | Chief warrant officer 2 | Warrant officer 1 | ||||||
 U.S. Coast Guard |  |  |  | |||||||
| Chief warrant officer 4 | Chief warrant officer 3 | Chief warrant officer 2 | ||||||||
 United States Marine Corps |  |  |  |  |  | |||||
| Chief warrant officer 5 | Chief warrant officer 4 | Chief warrant officer 3 | Chief warrant officer 2 | Warrant Officer 1 | ||||||
| NATO rank | WO-5 | WO-4 | WO-3 | WO-2 | WO-1 | |||||
WO are used for United States warrant officers only. [32] Countries not listed use only regular officer ranks, do not have warrant officers, or warrant officers are considered OR (Other/Enlisted Rank).
Counter admiral is a rank found in many navies of the world, but no longer used in English-speaking countries, where the equivalent rank is rear admiral. The term derives from the French contre-amiral. Depending on the country, it is either a one-star or two-star rank.
Commissioned officers' rank comparison chart of all land forces of NATO member states.
This page lists the enlisted ranks and insignia of NATO member armies. For the comparison chart of the commissioned officers, see Ranks and insignia of NATO armies officers.
The following are the ranks and insignia of NATO Air Forces Enlisted personnel for each member nation.
The following table lists the ranks and insignia of officers in NATO air forces.
This table shows the ranks and insignia of NCOs and Seaman in the navies of member countries of NATO. NATO maintains a "standard rank scale" in an attempt to match every member country's military rank to corresponding ranks used by the other members. The rank categories were established in the document STANAG 2116, formally titled NATO Codes for Grades of Military Personnel.
The rank insignia of the Italian Navy are worn on epaulettes of shirts and white jackets, and on sleeves for navy jackets and mantels.
Ship-of-the-line lieutenant is a naval officer rank, used in a number of countries. The name derives from the name of the largest class of warship, the ship of the line, as opposed to smaller types of warship.
Corvette captain is a rank in many navies which theoretically corresponds to command of a corvette. The equivalent rank is lieutenant commander in the Royal Navy and other Commonwealth navies, lieutenant commander in the United States Navy, and lieutenant-commander in the Royal Canadian Navy – a bilingual country which actually uses the term capitaine de corvette (capc) for the rank of lieutenant-commander when written or spoken in French.
Rank comparison chart of all armies and land forces of European states.
Rank comparison chart of all navies of European states.
Rank comparison chart of non-commissioned officers (NCOs) and enlisted personnel for all armies and land forces of European states.
Rank comparison chart of air forces non-commissioned officers and other personnel of European states.
Rank comparison chart of all navies of European states. Some European countries do not have naval forces, either because they are landlocked, such as Austria, Belarus, the Czech Republic, Moldova, Luxembourg, Bosnia & Herzegovina, Kosovo, Slovakia, San Marino and the Vatican, or naval duties provided by another state such as Monaco.
Commissioned officers' and enlisted rank comparison chart of all marine forces.
Rank comparison chart of all armies and land forces of the European Union member states.
Rank comparison chart of non-commissioned officers (NCOs) and enlisted personnel for all armies and land forces of the European Union member states.
Rank comparison chart of all navies of the European Union member states.
Rank comparison chart of all navies of the European Union member states. Some EU member states do not have naval forces, either because they are landlocked Austria, the Czech Republic, Hungary, Luxembourg and Slovakia.
Rank comparison chart of air forces non-commissioned officers and other personnel of the European Union member states.
