Ky-Chun So(Korean: 소기천; born 10 June 1958) is a South Korean theologian and is the Kwang Jang Chair Professor of the New Testament, Early Christianity, and the Nag Hammadi Library at Presbyterian University and Theological Seminary in Seoul.^[1][2][3] At Claremont School of Theology and the Claremont Graduate University, California, USA, he studied New Testament theology, Nag Hammadi texts and Gospels from James M. Robinson, a disciple of Rudolf Bultmann.

Since 1989, So has been involved in researching the restoration of the historical Jesus' sayings. He also belongs to the International Q project of the Society of Biblical Literature (SBL).^[4] He is the co-editor of the Critical Edition of Q source. He published Jesus in Q: The Sabbath and Theology of the Bible and Extracanonical Texts,^[5] a study of the relationship between the Sabbath and the theology of Jesus in 2017. He published the book on Ernst Fuchs and Gerhard Ebelling in 2006.^[6] He is now the head of the Jesus Sayings Hub in Korea,^[7] the president of the Society of Korean Q Studies, and the secretary of the Korea Reformed Theological Society 한국개혁신학회 ^[ko]. It is the preparation committee for the 500th anniversary of the Reformation.

• So, Ky-Chun (1999). The Sabbath Controversy of Jesus: between Jewish law and the Gentile mission (Ph.D.). Claremont, CA: Claremont Graduate University. OCLC 40550247.

• ——— (2006). 훅스 & 에벨링 Fuchs & Ebeling: History of Hermeneutics and New Hermeneutics. Seoul: Salim Publishing House.
• ——— (2017). Jesus in Q: The Sabbath and Theology of the Bible and Extracanonical Texts. Eugene, OR: Wipf & Stock. ISBN 9781498282116. OCLC 973291702.

• ——— (2000). "Jesus' Understanding of Spirit". Korean Journal of Theology. 2: 52–69.
• ——— (May 2001). "Jewish Influences on Gnosticism in the Apocalypse of Adam". Presbyterian Journal of Theology. 1 (1): 49–74.
• ——— (May 2002). "A Tradition-History Development of the Meals". Korean Presbyterian Journal of Theology. 2: 33–47.
• ——— (Autumn 2002). "The Eschatology of the Q Community". Korean New Testament Studies: Journal of the New Testament Society of Theology. 9 (3): 619–636.
• ——— (May 2003). "Dating Q Regarding to the Community Rules in Jesus' Inaugural Sermon". Korean Presbyterian Journal of Theology. 3: 32–65.
• ——— (December 2003). "Jewish Mission and Gentile Mission in the New Testament". Mission and Theology. 12: 350–365.
• ——— (May 2005). "The God of Jesus, the Q Community, and the Gospel of Luke". Korean Presbyterian Journal of Theology. 5: 9–27.
• ——— (2006). "The Sabbath and the Synoptic Problem". Theological Forum. 43 (2): 767–782.
• ——— (May 2006). "Christological Insights: Between the Psalms of Solomon and the Sayings Gospel Q (1)". Korean Presbyterian Journal of Theology. 6: 31–54.
• ——— (2007). "A Theological and Anthropological Understanding of Creation: on Focus of Genesis 1-2". Deep Word Clear Teaching: A Paper on the Commencement of Retirement of Professor Cheong Hoon Kang. Seoul: Written in the Land: 414–427. {{cite journal}}: Cite journal requires |journal= (help)
• ——— (May 2007). "Christological Insights: Between the Psalms of Solomon and the Sayings Gospel Q (2)". Korean Presbyterian Journal of Theology. 7: 3–39.
• ——— (May 2008). "A Study of Thomas Christianity". Korean Presbyterian Journal of Theology. 8: 25–46.
• ——— (2009). "James M. Robinson's Impacts on Korean New Testament Scholarship". Korean Presbyterian Journal of Theology. 9: 23–52.
• ——— (2013). "Religion and Science: 4 Different Ways to Solve Its Relationship". Journal of Asian and Asian American Theology. 11: 118–139.
• ——— (2014). "An Inter-textual Study on the Narrative of the Raising of the Widow's Son from Nain (Luke 7:11-17)". Church and Theology. 78: 67–86.* ——— (2014). "Q 14:5 and the Sabbath Controversy". Reformed Theory and Practice. 7: 199–230.
• ——— (2015). "A Study of the Jewish Sabbath". Church and Theological Seminary. 79: 41–61.
• ——— (2016). "A Study of the Sabbath Institutions and Observances". Church and Theological Seminary. 80: 65–82.

• ——— (2009). "Recent Trends in the Study of the Historical Jesus in Korea". In Boyer, Chrystian; Rochais, Gérard (eds.). The Historical Jesus around The World. Montreal: Éditions Fides. ISBN 9782762127645. OCLC 977390113.