| Hangul: | 고창수 |
| Hanja: | 高昌秀 |
| Rr: | Go Chang-su |
| Mr: | Ko Ch'ang-su |
Ko Chang-soo (born December 5, 1934, in Hungnam) is a Korean poet and diplomat.
Chang obtained a Doctor of Letters degree from Sungkyunkwan University in Seoul, Korea. He wrote his dissertation on Buddhist thoughts in T. S. Eliot's Four Quartets. He served his country as a career diplomat, serving as South Korean consul general in Seattle, Washington in the United States and ambassador to Ethiopia and Pakistan.
His poetry is written in Korean, but he has translated much of his own as well as other Korean poetry. In addition to publishing having a number poetry collections, he has had poems published in such journals as World Poetry, Viewpoint 11, and Curious Cats. Ko has won various Korean poetry prizes as well as the Lucian Blaga International Poetry Festival Grand Prize in Romania. Some of his poetry has also been translated into Spanish. He also has won the Modern Korean Literature Translation Award.
Much of Ko's poetry reflects his knowledge of Western culture and literature, as seen in such poems as "To Marc Chagall." Other poems examine and reflect on his experience in Korea (e.g., "In a Remote Korean Village") and other places around the world (e.g., his long poem, "Mohenjo-Daro"). Many, though not all, of his poems are set out-of-doors. Some of these place the poet in the setting.