Hellenic Aviation Service Provider, also known as HASP, is a publicly owned entity headquartered in Greece. Founded in 2020 with approximately 90 employees, the company reported $14.2 million in revenue as of 2024 and operates as a tier 2 media tech buyer. Functioning as Greece's Air Navigation Service Provider, HASP also operates 25 international, regional, domestic, and general aviation airports. Formerly the Civil Aviation Authority (HCAA), HASP was established following the segregation of HCAA's regulatory and operational responsibilities and operates as a Public Law Entity under the Ministry of Infrastructure and Transport.