Yun Sunji

Yun Sunji (; 1591–1666) was a Korean scholar-official of the Joseon period in the 17th century.

He was also diplomat and ambassador, representing Joseon interests in the 5th Edo period diplomatic mission to Japan.

1643 mission to Japan In 1643, King Injo dispatched a mission to Japan. This diplomatic mission functioned to the advantage of both the Japanese and the Koreans as a channel for developing a political foundation for trade.

This delegation was explicitly identified by the Joseon court as a "Communication Envoy" (tongsinsa). The mission was understood to signify that relations were "normalized."

The Joseon embassy arrived at the shogunal court of Tokugawa Iemitsu in Edo on the 20th year of Kan'ei, according to the Japanese calendar in use at that time.

Recognition in the West Yun Sunji's historical significance was confirmed, when his mission was specifically mentioned in a widely distributed history published by the Oriental Translation Fund in 1834. and in Nihon ōdai ichiran (published in Paris in 1834). Joseon foreign relations and diplomacy are explicitly referenced in the 1834 work.