Nacer E. Chahat is a French Algerian-American engineer and researcher at the National Aeronautics and Space Administration (NASA) Jet Propulsion Laboratory.

[3][4] Chahat has been associated with the National Aeronautics and Space Administration (NASA) Jet Propulsion Laboratory (JPL), since 2013.

[6] On April 19, 2021, Chahat was part of the Jet Propulsion Laboratory team that successfully made Ingenuity, the first powered-controlled aircraft to fly on another planet.

[3] Chahat specializes in antenna design and electromagnetic interference and compatibility (EMI/EMC) analysis for space missions.

[8] Chahat's notable contributions to NASA missions include the design of the Raincube Ka-band deployable mesh reflector, the Mars Cube One X-band antennas, the Europa lander antenna, and communication tools for the Mars Helicopter mission.