| Hangul: | 윤두서 |
| Hanja: | 尹斗緖 |
| Rr: | Yun Du-seo |
| Mr: | Yun Tusŏ |
| Hangulho: | 공재 |
| Hanjaho: | 恭齋 |
| Rrho: | Gongjae |
| Mrho: | Kongjae |
| Hangulja: | 효언 |
| Hanjaja: | 孝彦 |
| Rrja: | Hyo-eon |
| Mrja: | Hyoŏn |
Yun Du-seo (; 28 July 1668 – 21 December 1715) was a painter and scholar of the Joseon period. He is the grandson of Yun Seondo, a great scholar in Korean history. He passed the gwageo exam, but did not enter government service. Rather, he devoted his whole life to painting and studying Confucianism. His self-portrait is regarded as one of the many masterpieces of Korean art. Yun Du-seo is also known for his yeongmohwa (animal-and-bird painting). He was a member of the Haenam Yun clan .