Christian Nestell Bovee was an epigrammatic New York City writer.

Christian Oster is a French writer. He has written more than a dozen novels, and he is also a prolific author of children's books. Noted works include My Big Apartment (1999) which won the Prix Médicis, and The Cleaning Woman (2001). The latter was adapted into a film by Claude Berri.

Christian Reuter (1665 in Kütten – 1712 or later) was a German author.

Christian Samuel Theodor Bernd was a German linguist and heraldist, one of the founders of scientific heraldry.

Christian Schwarzenegger is a Swiss academic lawyer and professor of criminal law, criminal procedure and criminology at the University of Zurich.

Christian Scriver was a German Lutheran minister and devotional writer.

Christian Spielmann is an Austrian physicist and a professor at the University of Jena

Christian Thomasius was a German jurist and philosopher.

Christian van Nieuwerburgh (1971) is a UK-based executive coach, academic, consultant and author. He is Professor of Coaching and Positive Psychology at the University of East London (UEL) and Executive Director of Growth Coaching International, a Sydney-based global coach training provider for the education sector. As an author, he is best known for An Introduction to Coaching Skills: A Practical Guide, now in its third edition (2021). He has written or edited a number of key texts in his field: Coaching in Education: Getting Better Results for Students, Educators and Parents (2012), Coaching in Professional Contexts (2014), Coaching Educativo, Coaching in Islamic Culture: The Principles and Practice of Ershad, The Leader’s Guide to Coaching in Schools and Advanced Coaching Practice.

Christian von Ehrenfels was an Austrian philosopher, and is known as one of the founders and precursors of Gestalt psychology.