Companies based in İzmir

IZair (İzmir Hava Yolları) was an airline headquartered on the grounds of Adnan Menderes Airport in İzmir, Turkey.

Petkim Petrokimya Holding A.Ş. is the leading petrochemical company of Turkey. Founded on April 3, 1965, by Turkish Petroleum Corporation (TPAO) in 1965 in İzmir and privatized in 2008 and transferred to SOCAR. The main plant complex is located in Yarımca, Izmit. From 1985 on, a second complex has been constructed in Aliağa, İzmir.

defunct railway company based in İzmir