Gikū

Gikū 
義空
Personal life
Bornunknown
China
Diedunknown
China
Flourished9th Century CE
OccupationBuddhist monk, scholar
Religious life
ReligionBuddhism
SchoolChan
Senior posting
TeacherYanguan Qi’an
Chinese name
Traditional Chinese義空
Simplified Chinese义空
Transcriptions
Standard Mandarin
Hanyu PinyinYìkòng
Wade–GilesI4 k'ung4
Vietnamese name
VietnameseNghĩa Không
Korean name
Hangul의공
Hanja義空
Transcriptions
Revised RomanizationUigong
Japanese name
Hiraganaぎくう

Gikū or Yikong was an early Heian period Buddhist monk from Tang China. He is Japan's first Buddhist monk who exclusively taught Zen.