Taesangwang or Taesanghwang (literally "King Emeritus the Great" or "Emperor Emeritus the Great") is the title for a retired king or Korean Emperor in Korean history.
Sometimes the term is called Sangwang or Sanghwang.
Taejo of Goguryeo called himself "Taejo the Great" (Korean: 太祖大王, romanized: Taejodaewang), who is the first retired king on the Samguk Sagi to retired and abdicated in favour of his son Suseong as a successor.
The last retired emperor as the Taesanghwang was Emperor Gojong in Korean Empire.