Aaron Zelinsky is an attorney in the US. In 2018, he joined the Mueller team on detail from the US attorney's office in Maryland. Zelinsky served as an assistant US attorney under Rod Rosenstein, who is the deputy attorney general and overseeing Robert Mueller’s appointment.
Zelinsky was involved in the George Papadopoulos investigation.
As part of his role as a prosecutor in Maryland, Zelinsky was involved in prosecuting cases of felon gun ownership, health care fraud conspiracy, and food stamp fraud and wire fraud.
In 2016, Zelinsky was recognized by the Justice Department for excellence in prosecuting organized criminal activity.