OASTH
Thessaloniki Urban Transport Organization
Mass transport company in Thessaloniki, Greece
The Thessaloniki Urban Transport Organisation (Greek: Οργανισμός Αστικών Συγκοινωνιών Θεσσαλονίκης), abbreviated OASTH (Greek: ΟΑΣΘ), is a mass transport company operating in Thessaloniki, Greece.
It was founded in 1957 and now covers a large area of the metropolitan area of Thessaloniki, the country's second-largest city. OASTH only includes bus transportation due to lack of other means of transport.