Stephen G. Jurczyk[1] (February 20, 1962 – November 23, 2023) was an American engineer who served as the Acting Administrator of NASA.

On August 25, 2021, emails surfaced on a hacking forum allegedly showing United Launch Alliance Vice President Robbie Sabathier being critical of NASA administrators.

At the time the email was sent, the acting NASA Administrator position was filled by Steve Jurczyk.

Among many statements made, Sabather stated, "NASA HQ’s A-Suite leadership is currently incompetent and unpredictable".

[2] This article incorporates public domain material from websites or documents of the National Aeronautics and Space Administration.