List of Famous people with last name Callas

Maria Callas was an American-born Greek soprano.

Charlie Callas was an American comedian and actor most commonly known for his work with Mel Brooks, Jerry Lewis, and Dean Martin, and his many stand-up appearances on television talk shows in the 1970s. He was also known for his role as Malcolm Argos, the restaurant owner and former con man, on the Eddie Albert and Robert Wagner television series Switch (1975–1978). Callas was also known as the voice of Elliott the dragon in Disney's live-action/animated musical film Pete's Dragon (1977).

Jon Callas is an American computer security expert, software engineer, user experience designer, and technologist who is the co-founder and former CTO of the global encrypted communications service Silent Circle. He has held major positions at Digital Equipment Corporation, Apple, PGP, and Entrust, and is considered "one of the most respected and well-known names in the mobile security industry." Callas is credited with creating several Internet Engineering Task Force (IETF) standards, including OpenPGP, DKIM, and ZRTP, which he wrote. Prior to his work at Entrust, he was Chief Technical Officer and co-founder of PGP Corporation and the former Chief Technical Officer of Entrust.