A lot of information about the companies and the organizations are provided in the following units. Actually, these companies undertake some competencies of the Prefectural Administration of Heraklion. The competencies are related to the administration, the supervision, the maintenance, the function, the improvement, the elevation and the development of diverse infrastructures in the Heraklion County. Simultaneously, the competencies are related to the promotion of cultural elements, the protection, the elevation and management of humanistic, geographical, historical, social and artistic recourses, capabilities of the County.

The following unit mentions the organizations such as the committees of folk education which are self-contained services of the Prefectural Administration. (Their Greek abbreviation is "NELE")