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Türkiye's state-owned oil and gas producer Turkish Petroleum Corporation (TPAO), aerospace and defense manufacturer Turkish Aerospace Industries (TAI), and defense electronics company Aselsan climbed into the country's top 10 industrial companies by production-based sales in 2025, according to a report by the Istanbul Chamber of Industry (ISO).
The three state-owned firms posted some of the largest ranking gains in this year's list, reflecting strong performances in the energy, aerospace and defense sectors.
TAI rose from 11th place to seventh with ₺140.9 billion ($3.6 billion) in production-based sales, TPAO advanced from 16th to eighth with ₺138.8 billion, while Aselsan moved up from 17th to ninth with ₺130.2 billion.
Despite the changes in the rankings, oil refiner Tupras retained its position as Türkiye's largest industrial company, recording ₺698.8 billion in production-based sales. Automaker Ford Otomotiv held onto second place with ₺538.3 billion, while oil refining company Star Rafineri remained third at ₺327.9 billion.
Automakers OYAK-Renault and Toyota Otomotiv ranked fourth and fifth, respectively, with production-based sales of ₺235.5 billion and ₺206.3 billion. Home appliances maker Arcelik followed in sixth place with ₺165.7 billion.
Commercial vehicle manufacturer Mercedes-Benz Turk also entered the top 10, moving up from 12th place to 10th with ₺127 billion in production-based sales.
Meanwhile, automaker Hyundai Motor Türkiye, steelmakers Eregli Demir Celik and Iskenderun Demir Celik, and precious metals refiner Istanbul Altin Rafinerisi dropped out of the top 10 compared with the previous year.
According to the ISO's annual Top 500 Industrial Enterprises survey, the combined production-based sales of Türkiye's 500 largest industrial companies rose 28% year-over-year to ₺11.1 trillion in 2025, accounting for nearly one-fifth of the country's ₺63 trillion economy.
Adjusted for the annual average domestic producer price index (D-PPI) of 25.4%, production-based sales posted real growth of 2.1%. The result marked a turnaround from real declines of 4.2% in 2022, 5.2% in 2023 and 3.4% in 2024.
The companies included in the ISO 500 also played a major role in the country's foreign trade, accounting for $104.7 billion, or 38.3%, of Türkiye's total exports of $273.3 billion in 2025.
Employment among the top 500 industrial companies declined 2.5% to 804,000 workers, representing roughly 5.1% of Türkiye's total paid workforce of 15.8 million. With employment falling, wages and salaries paid per employee increased 42.9%, the survey showed.
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