No — reliable public sources do not currently confirm that Brendan Carr is left-handed.

Brendan Carr is an American attorney and a Commissioner of the Federal Communications Commission (FCC). He was initially appointed as a Commissioner by President Donald Trump in 2017 and was later confirmed by the Senate.

Before his appointment as Commissioner, Carr served as General Counsel of the FCC. In this role, he advised the Chairman and the Commission on all legal matters, representing the agency in court and at congressional hearings.

Carr's work at the FCC has focused on several key areas, including expanding broadband internet access to rural areas, promoting 5G wireless technology, and addressing issues related to communications infrastructure.

He holds a Bachelor of Arts from Georgetown University and a Juris Doctor from Catholic University of America's Columbus School of Law. Prior to joining the FCC, he practiced law in the private sector.