Daewi is a military rank in both South Korean and North Korean militaries.

In the South Korean military, Daewi is a Korean military rank

Comparative military ranks of Korea

Comparative military ranks of Korea refer to the ranks and insignia maintained by the three primary military powers present on the Korean Peninsula, those being the Republic of Korea Armed Forces , the Korean People's Army of the Democratic People's Republic of Korea , and the military forces of...

 used in the South Korea military

Military of South Korea

The Republic of Korea Armed Forces or ROK Armed Forces, is the armed forces of the Republic of Korea...

. The rank is considered equivalent of a captain in many Western

Western world

The Western world, also known as the West and the Occident , is a term referring to the countries of Western Europe , the countries of the Americas, as well all countries of Northern and Central Europe, Australia and New Zealand...

 armies

Army

An army An army An army (from Latin arma "arms, weapons" via Old French armée, "armed" (feminine), in the broadest sense, is the land-based military of a nation or state. It may also include other branches of the military such as the air force via means of aviation corps...

 and air force

Air force

An air force, also known in some countries as an air army, is in the broadest sense, the national military organization that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army, navy or...

s and to a full lieutenant

Lieutenant

A lieutenant is a junior commissioned officer in many nations' armed forces. Typically, the rank of lieutenant in naval usage, while still a junior officer rank, is senior to the army rank...

 in many navies

Navy

A navy is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake- or ocean-borne combat operations and related functions...

.

In the North Korean military, it corresponds to an army or air force senior captain

Senior Captain

Senior Captain is a rare military rank which is used in some countries armed forces.-Army:In some armies of the world, the senior captain is a rank between a regular Captain and a Major. The rank is often only found in armies and air forces...

, a rank between U.S. captain and major

Major

Major is a rank of commissioned officer, with corresponding ranks existing in almost every military in the world.When used unhyphenated, in conjunction with no other indicator of rank, the term refers to the rank just senior to that of an Army captain and just below the rank of lieutenant colonel. ...

. A daewi in the North Korean Navy would correspond, equivalently, to a senior lieutenant

Senior Captain

Senior Captain is a rare military rank which is used in some countries armed forces.-Army:In some armies of the world, the senior captain is a rank between a regular Captain and a Major. The rank is often only found in armies and air forces...

, a rank between U.S. Navy lieutenant and lieutenant commander

Lieutenant Commander

Lieutenant Commander is a commissioned officer rank in many navies. The rank is superior to a lieutenant and subordinate to a commander...

.