Rémi Géraud-Stewart (PhD, DIng, MSc) is a cryptologist and security researcher, member of the Information Security Group of the Ecole normale supérieure. His research interests include the mathematical aspects of cryptology and information security.

As a lecturer at the Ecole Centrale (now CentraleSupélec), he is responsible for the Information Security (since 2014), Algebra and Cryptology (since 2017), and for the Cybersecurity continuing education (since 2017).

He received the Microsoft Security Researcher Award in 2016.