| Taesangwang | |
| Hangul: | 태상왕 |
| Hanja: | 太上王 |
| Rr: | Taesangwang |
| Mr: | T'aesangwang |
| Othername1: | Taesanghwang |
| Hangul1: | 태상황 |
| Hanja1: | 太上皇 |
| Rr1: | Taesanghwang |
| Mr1: | T'aesanghwang |
| Othername2: | Sangwang |
| Hangul2: | 상왕 |
| Hanja2: | 上王 |
| Rr2: | Sangwang |
| Mr2: | Sangwang |
| Othername3: | Sanghwang |
| Hangul3: | 상황 |
| Hanja3: | 上皇 |
| Rr3: | Sanghwang |
| Mr3: | Sanghwang |
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", 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.