Thomas D. Gazis is an astrologer, writer, teacher, and international speaker. He was born in Piraeus, Greece. After finishing college, he moved to Italy in order to study Architecture at Turin's University. He became a CIDA’s (Italian Federation's) member and participated in many seminars and congresses in Italy while he attended international astrology conferences in Switzerland. In 1986 he completed his Diploma in Architecture and returned to Greece. He then became a regular contributor to Greek and international astrology magazines. In 1987 he started teaching astrology and he soon established himself as a foremost teacher in Greece, thanks to his original teaching methods and to his ability to communicate the astrology concepts and principles to his students. Over 200 Greeks have frequented the Thomas Gazis astrology courses! Thomas Gazis is the author of three Greek books entitled "Synastry, The Astrology of Human Relationships" and «The New 3rd Millennium’s Astrology” and “Byzantine Astrology” (under publishing). He has written articles for the Italian «Linguaggio Astrale» bulletin, for “American Astrology” (his article “The Living Zodiac” was published on the July 2003 issue) and for “Horoscope Guide” (his article “The Zodiac Banquet” was published on the April 2004 issue). He also wrote for “The Astrological Journal” (“The first English astrologers were Greek - Byzantines”, May 2009 issue) and (“The Astrological Chart of Alexander the Great”, v.36 2008). In 1994 and 1997 he respectively lectured at the two International Astrology Conferences of Venice - Italy («Alexander’s the Great Horoscope» and «Byzantine Astrology»). Next, in 1996 and 1997 he lectured at the London's History of Astrology Seminars («Early Byzantine Astrology», «Late Byzantine Astrology»). In 1997 and 1998 he lectured at two major Spanish astrology conferences (Barcelona - «For a Universe-centric astrology», Arousa - «Ancient Greek Proto-astrology»). In 2000 Thomas Gazis organized "Astromykonos 2000", an international astrology conference in the island of Mykonos, Greece, featuring among other international speakers Robert Hand. He also organized "Astromykonos 2001" featuring Noel Tyl and Elizabeth Teissier. In July 2002 Gazis lectured at Montpellier’s, France south European (F.A.E.S.) conference («The latent synastric elements»). In 2006 he lectured at Valencia's - Spain 4th FAES conference ("Byzantine Astrology: the Bridge between Antiquity and Renaissance"). In November 2007 he lectured at Valencia - Spain (“Psellos - Metochites: Two Byzantine Prime Ministers - Astrologers”) for the “Jornadas Mondiales de Astrologia” conference. In October 2008 Thomas Gazis lectured at the Koen Van de moortel's conference in Ghent, Belgium ("Astrological elements in ancient Greek folklore"). In October 2009 he lectured at the Colombian “Primer Congreso Astrologico Virtual” (Recepción Mutua Urano – Neptuno y La Reciente Declinación De La Astrología). In July 2010 he lectured at the "Adriatic Conference" in Termoli - Italy ("The Byzantine Astrology: A Noah's ark"). He was invited - as a speaker - to the United Astrology Conference (U.A.C) held in May 2012 in New Orleans, USA ("Byzantine astrology: bridging a thousand years gap"). Thomas also lectured at the "Breaking down the borders" online conference that was held between November 30 - Dec 2, 2012 ("The Amazing Similarities and Discrepancies Between the Babylonian and the Mayan Venus"). Finally, he lectured at the Filip Filipov’s 2021 and 2022 third and fourth respectively online European conferences on astrology.

The courses that Thomas Gazis teaches:
1. Beginners Course
2. Dynamic Zodiac
3. Elements and Qualities
4. Planetary Aspects
5. Chart Interpretation
6. Ancient Greek Proto-astrology
7. Byzantine Astrology
8. Eclispes in Astrology