Sinclair Buchanan Ferguson, a Scottish theologian, is well-regarded in Reformed Christian circles for his teaching, writing, and editorial contributions, and he currently holds the esteemed position of Chancellor's Professor of Systematic Theology at Reformed Theological Seminar.

Ferguson's journey in ministry began when he was ordained as a minister in the Church of Scotland in 1971. He dedicated a decade of his life as the minister of St. John's, Baltasound, the northernmost parish in Scotland, located on the island of Unst, Shetland. Eager to expand his knowledge and share his expertise, he accepted a teaching position as a part-time Professor of Systematic Theology at Westminster Theological Seminary in Philadelphia.

Since 2013, Ferguson has been actively involved in the ministry at St. Peter's Free Church in Dundee, where he serves as a preacher and elder. In 2022, a Festschrift was published in his honor, highlighting his significant contributions to theology. Ferguson has also made a mark as an editor with the Banner of Truth Trust and as a professor of systematic theology at Redeemer Seminary in Dallas. Notably, he has held the esteemed Charles Krahe Chair for Systematic Theology at Westminster Theological Seminary.

A beloved author, teacher and pastor, Dr. Ferguson continues to serve the Body of Christ in many roles, which include as a council member of the Alliance of Confessing Evangelicals and currently serving as a teaching fellow for Ligonier Ministries.