Church historian and theologian who served as president of Hapdong Theological Seminary and Torch Trinity Graduate University

| Life | 1952 |
| Era | 대한민국 |
| Clan | 보성 오씨 |
O Deok-gyo (Deok-Kyo Oh) was born on 14 December 1952 in Nampo-myeon, Boryeong, South Chungcheong, and is a theologian and church historian whom Wikipedia classifies as Boseong O. After theology studies at Chongshin University, its seminary and graduate school (Th.M.) he received a Ph.D. from Westminster Theological Seminary in the United States. His Chinese-character name was not confirmed, so none is given.
Ordained in 1978, he served as an air force chaplain and was discharged as a captain in 1981. He taught historical theology at Hapdong Theological Seminary (1987-2014), was its seventh president (2005-2009), president of the Korean Presbyterian Theological Society (2010-2014), president of the University of Ulaanbaatar in Mongolia (2014-2017) and became the seventh president of Torch Trinity Graduate University in 2023.
He also served as an adviser to the National Unification Advisory Council (2015-2019) and as adviser and adjunct professor at Westminster Seminary (from 2019), and was named "Theologian of the Year" by the John Calvin 500th Anniversary Committee in 2014. At the 2025 World Evangelical Alliance general assembly in Seoul he chaired the theological committee and led the drafting of the "Seoul Declaration". His books include works on the Puritans, Presbyterian church history and the Reformation. As he is living, only his public academic career is given.