# Wei (rank)

Wei is a company-grade officer rank used in some East Asian militaries, including China, Taiwan, North Korea and South Korea.

## Chinese variant
### People's Liberation Army

The same rank names are used for all services, prefixed by haijun (simplified Chinese: 海军; traditional Chinese: 海軍; lit. 'naval force') or kongjun (simplified Chinese: 空军; traditional Chinese: 空軍; lit. 'air force').
| Rank group | Junior officers | Junior officers | Junior officers | Junior officers |
| Chinese | 大尉 | 上尉 | 中尉 | 少尉 |
| Pinyin | Dàwèi | Shàngwèi | Zhōngwèi | Shǎowèi |
| Literal translation | Great officer | Upper officer | Middle officer | Lower officer |
| PLA Ground Forces | Used only 1955–1965 | | | |
| PLA Navy | Used only 1955–1965 | | | |
| PLA Air Force | Used only 1955–1965 | | | |
| People's Armed Police | Used only 1955–1965 | | | |
| | 大尉 Da wei | 上尉 Shang wei | 中尉 Zhong wei | 少尉 Shao wei |
| Rank group | Junior officers | Junior officers | Junior officers | Junior officers |

### Republic of China Armed Forces

| Rank group | Junior officers | Junior officers | Junior officers |
| Chinese | 上尉 | 中尉 | 少尉 |
| Taiwanese Hokkien | Siōng-ùi | Tiong-ùi | Siáu-ùi |
| Literal translation | Upper officer | Middle officer | Lower officer |
| Republic of China Army | | | |
| Republic of China Navy | | | |
| Republic of China Air Force | | | |
| Republic of China Marine Corps | | | |
| | 上尉 Siōng-ùi | 中尉 Tiong-ùi | 少尉 Siáu-ùi |
| Rank group | Junior officers | Junior officers | Junior officers |

## Korean variant
### North Korea

| Rank group | Junior officers | Junior officers | Junior officers | Junior officers |
| Hangul | 대위 | 상위 | 중위 | 소위 |
| Hanja | 大尉 | 上尉 | 中尉 | 少尉 |
| Romanization | Taewi | Sangwi | Chungwi | Sowi |
| Literal translation | Great rank | Upper rank | Middle rank | Lower rank |
| Korean People's Army Ground Force | | | | |
| Korean People's Army Ground Force | | Captain | First lieutenant | Second lieutenant |
| Korean People's Navy | | | | |
| Korean People's Navy | | Lieutenant | Lieutenant junior grade | Ensign |
| Korean People's Army Air Force | | | | |
| Korean People's Army Air Force | | Captain | First lieutenant | Second lieutenant |
| | 대위 Taewi | 상위 Sangwi | 중위 Chungwi | 소위 Sowi |
| Rank group | Junior officers | Junior officers | Junior officers | Junior officers |

### South Korea

| Rank group | Junior officers | Junior officers | Junior officers | Junior officers |
| Hangul | 대위 | 중위 | 소위 | 준위 |
| Hanja | 大尉 | 中尉 | 少尉 | 准尉 |
| Romanization | Daewi | Jungwi | Sowi | Junwi |
| Literal translation | Great rank | Middle rank | Small rank | Given rank |
| Republic of Korea Army | | | | |
| Republic of Korea Army | Captain | First lieutenant | Second lieutenant | Warrant officer |
| Republic of Korea Navy | | | | |
| Translation | Lieutenant | Lieutenant junior grade | Ensign | Warrant officer |
| Republic of Korea Air Force | | | | |
| Republic of Korea Air Force | Captain | First lieutenant | Second lieutenant | Warrant officer |
| Republic of Korea Marine Corps | | | | |
| Republic of Korea Marine Corps | Captain | First lieutenant | Second lieutenant | Warrant officer |
| | 대위 Daewi | 중위 Jungwi | 소위 Sowi | 준위 Junwi |
| Rank group | Junior officers | Junior officers | Junior officers | Junior officers |

## Vietnamese variant

| Rank group | Junior officers | Junior officers | Junior officers | Junior officers |
| Native name | Đại úy | Thượng úy | Trung úy | Thiếu úy |
| Chữ Hán | 大尉 | 上尉 | 中尉 | 少尉 |
| Literal translation | Grand officer | Upper officer | Middle officer | Smaller officer |
| Vietnam People's Ground Force | | | | |
| Vietnam People's Navy | | | | |
| Vietnam People's Air Force | | | | |
| Native name | Đại úy | Thượng úy | Trung úy | Thiếu úy |
| Rank group | Junior officers | Junior officers | Junior officers | Junior officers |

### South Vietnamese variant

| Rank group | Junior officers | Junior officers | Junior officers | Officer cadet |
| Native name | Đại úy | Trung úy | Thiếu úy | Chuẩn úy |
| Chữ Hán | 大尉 | 中尉 | 少尉 | 准尉 |
| Literal translation | Great officer | Middle officer | Smaller officer | Quasi-officer |
| Army of the Republic of Vietnam (1967-1975) | | | | |
| Translation | Captain | First lieutenant | Second lieutenant | Aspirant |
| Republic of Vietnam Navy (1967-1975) | | | | |
| Translation | Lieutenant | Lieutenant (junior grade) | Ensign | Commissioned warrant officer |
| Republic of Vietnam Marine Division (1967-1975) | | | | |
| Translation | Captain | First lieutenant | Second lieutenant | Aspirant |
| Republic of Vietnam Air Force (1967-1975) | | | | |
| Translation | Captain | First lieutenant | Second lieutenant | Aspirant |
| Native name | Đại úy | Trung úy | Thiếu úy | Chuẩn úy |
| Rank group | Junior officers | Junior officers | Junior officers | Officer cadet |