Agios Thomás (GR: Αγιος Θωμάς) lies at 530 m above sea level. It is 30 km away from Heraklion and has a panoramic view over the whole area to the SE of Aghia Varvara.
Agios Thomas is a very old village and the first reference we have of it, is in a document of 1371, where it is quoted as a feudal property of Petrus de Medio, and again in a document dated 1380. Later, it figures in all the Venetian censi of the 16th and 17th centuries. In 1881, and in 1900, it figures as part of the Megali Vrisi municipality, with 344 inhabitants. From 1920, it figures in all the censi as a community with a continuously growing number of inhabitants. Nowadays there are over 800 inhabitants.