Yoon (Korean surname)

Yoon
Hangul	윤
Hanja
Revised Romanization	Yun
McCune–Reischauer	Yun

Yoon (윤) is the eighth most common family name in Korea. The name is sometimes also transliterated as Yun, Yune, or Youn. The Hanja character 尹 is defined as "eldest" in Korean which is different from the Chinese definition. The use of Hanja for personal names has become less common in Korea.

The Chinese character 尹 is also used by the following families: Yǐn (surname) in China and Doãn in Vietnam. However, the Korean surname Youn has no relations with the Yin of China or Doãn of Vietnam.

The Papyeong (파평/坡平) Yoon clan, which has its seat in Papyeong-myeon, Paju City, is the most well-known and largest Yun clan. The clan's founding ancestor is General Yun Sin-dal, who assisted Wanggeon in founding the Goryeo Dynasty.

Yoon Gwan was a renowned general in the Goryeo Dynasty. He helped form the Byeolmuban forces to fight and defeat the Jurchen tribes in 1107.

Several Papyeong Yoon women became queens during the early Joseon Dynasty, they include Queen Munjeong and Queen Janggyeong.

Last ruling Empress, Empress Sunjeong of the Korean Empire, was from another Yoon clan, Haepyeong Yoon. The Haepyeong Yoon clan was originally part of the Papyeong clan but broke away forming their own clan.

"Empress Sunjeong was born Lady Yun of Haepyeong in Seoul and her father was Marquis Yun Taek-yeong, the Lord of Haepung."

Yun Bo-seon the second president of South Korea is a distant relative of Empress Sunjeong of the Korean Empire.

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