Companies established in 1933

national flag-carrier airline of Turkey

winery and distributor in California

thumb|Sümerbank in Ankara Sümerbank was a Turkish bank and industrial holding company established in 1933 and originally owned by the Turkish state, now part of Oyak Bank. On 11 January 2002, Oyak Bank acquired Sümerbank and the combined bank is now known under the Oyak Bank name.

thumb|Entrance to İlbank’s annex building in Ankara Ilbank A.Ş., short for İller Bankası Anonim Şirketi, is a public development and investment bank based in Ankara, Turkey. It is subordinated to the Ministry of Environment and Urban Planning. The main areas of expertise of Ilbank are banking and insurance, mapping, drinking water supplies and treatment, sewage collection and disposal, wastewater treatment, solid waste management, urban superstructures.

Spanish pharmaceutical company