Wang T'aeng (; died 1112) was a Goryeo Royal Prince as the sixth son of King Munjong and Queen Inye, also a Buddhist monk under the name Dosaeng (as Wang T'aeng) and/or Boeung (as Wang Kyu).
In 1070, under his father, King Munjong's command, Wang shaved his hair and became a monk by starting a new life in Solli Temple () before went to Hyeonhwa Temple in Gaegyeong and became the disciple of his maternal uncle, Sohyà Ân (). Then, he served as an abbot in Beopju Temple. In 1084, Wang repaired the Bokcheon Hermitage () and served as an abbot in Geumsan Temple following Sohyà Ân's death in 1095, even contributed for the temple's development and maintenance. Since he was able to done this, Wang was believed to have a lot of wealth throughout his lifetime and gave it generously to others.
In 1112 (7th years reign of his nephew), some people reported that Wang, along with Kim In-sà Âk (), Yi Yà Â-rim (), Ha à Ân-sà Âk (), Im Sin-haeng (), and many others were plotting a treason. They then exiled to Geoje and those who were involved (even Kim, Yi, Ha, Im's sons were exiled and decapitated midway), so Wang was also considered to died at this time too.