Giannis Kefalogiannis was born in Rethymno in 1982. He is a lawyer and a Member of the Hellenic Parliament. He is a graduate of the National and Kapodistrian University Law School. He continued his studies at Columbia University in New York, obtaining a Master's Degree in Politics and International Relations. Following his graduation, he received training on negotiation techniques at Harvard Law School. In June 2012 Giannis elected MP for Rethymno on the Nea Dimokratia ticket. He was reelected in January 2015, September 2015 and July 2019. He was elected Secretary of the Hellenic Parliament for three consecutive parliamentary terms. He served in many parliamentary committees and as Shadow Defense and Foreign Affairs Secretary for Nea Dimokratia. From July 2019 until August 2021, he was the Deputy Minister of Infrastructure and Transport of the Hellenic Republic and served as Parliamentary Spokesperson for Nea Dimokratia. From July 2023 until March 2025 he was the Deputy Minister of National Defense. He speaks English and German.