The Athens Urban Transport Organization S. A. (OASA SA), commonly known as OASA, is a public transportation company based in Athens, Greece.

It was established in 2011 and operates as a subsidiary of the Hellenic Republic Asset Development Fund. OASA is responsible for the planning, coordination, and supervision of public transportation systems in the Attica region, which includes Athens and its surrounding areas. The headquarters of OASA is located in Athens, Greece.

The company's offices are situated in a modern building that provides administrative support for its operations. The headquarters serve as the central hub for managing and overseeing the various services offered by OASA. OASA offers a wide range of products and services related to public transportation in Athens.

These include the operation and maintenance of buses, trolleybuses, trams, and the Athens Metro. The company also manages the ticketing system and is responsible for the planning and development of transportation infrastructure in the region. OASA's goal is to provide efficient, reliable, and sustainable transportation solutions for the residents and visitors of Athens.

In terms of its global operations, OASA primarily focuses on serving the transportation needs of the Attica region. The company does not have any noteworthy subsidiaries, joint ventures, or partnerships on an international scale. In the local market, OASA holds a dominant position in the public transportation sector, being the primary authority responsible for coordinating and managing the transportation network in Athens.

The company faces competition from private transportation providers, but its strong market position and extensive infrastructure give it an advantage over its rivals. In recent years, OASA has focused on improving its services and modernizing its fleet. Major events and achievements include the expansion of the Athens Metro network, the introduction of new bus lines, and the implementation of an integrated ticketing system.

These efforts have contributed to OASA's growth and enhanced the overall quality of public transportation in Athens. In conclusion, OASA SA is a key player in the public transportation sector in Athens, Greece. The company provides a range of transportation services and has a strong market position in the region.

With its ongoing efforts to improve and expand its services, OASA continues to be a vital component of the urban transport infrastructure in Athens