George James Tsunis (Greek: Γεώργιος Δημητρίου Τσούνης) (born December 26, 1967) is an American lawyer and businessman who served as United States ambassador to Greece from 2022 to 2025.

He was previously a nominee to be the U.S. ambassador to Norway by President Barack Obama, although his nomination ultimately failed.

On March 15, 2021, he was appointed co-vice chairman of the Greek Orthodox America Archdiocese's National Coordinating Committee.

[6] Also, he's been awarded the Saint Paul's Medal, the Greek Orthodox Church of America's highest recognition for a layperson.

[16] In statements to the press in December 2014, Tsunis indicated that he was no longer seeking the nomination as ambassador to Norway.