Oil refiner Tüpraş retained the title of Türkiye's largest industrial company in 2025, according to the Istanbul Chamber of Industry's (ISO) annual ranking of the country's 500 biggest industrial enterprises, released on Wednesday.
The ISO 500 survey showed that Türkiye Petroleum Refineries, known as Tüpraş, ranked first with TL 698.8 billion ($19.6 billion) in net production-based sales.
Tüpraş has long been positioned as the leading industrial enterprise in Türkiye. The latest list showed less change among the most dominant companies on the list, which was led by refiners and automotive giants, but it also revealed the rise of defense companies, with two of them entering the Top 10 list.
The results of the "Türkiye's 500 Largest Industrial Enterprises 2025" survey were announced by ISO Chairperson Erdal Bahçivan at a news conference.
Ford Otomotiv retained second place with TL 538.3 billion ($15.1 billion), while Star Refinery remained third with TL 327.9 billion ($9.2 billion).
