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Our Company About Us

About Us

Founded in Gaziantep in 1974, Kalyon İnşaat forms the roots of Kalyon Holding, which now operates across numerous sectors and countries.

With more than half a century of experience delivering leading infrastructure and building projects in Türkiye and worldwide, Kalyon İnşaat is steadily progressing toward becoming a global brand, developing projects in many countries including England, Poland, Italy, Sweden, Romania, Azerbaijan, the Turkic republics, the United Arab Emirates, Qatar, Saudi Arabia, Iraq, Syria and African countries. Through its investments in transport infrastructure, oil and natural gas, water and the environment, rail systems, airports, buildings, ports and urban living projects, Kalyon İnşaat has created lasting works that have also accelerated social and economic development.

Providing tens of thousands of jobs, Kalyon İnşaat has delivered many major projects internationally as well as nationally, earning its place among the world's leading construction companies through its engineering and execution capabilities.

50Years of Experience

More than half a century of engineering expertise since 1974.

7Main Project Groups

Transport Infrastructure, Rail Systems, Airports, Water and Environment, Oil and Natural Gas, Ports and Building Projects

10Thousands of jobs

Specialist professionals working nationally and internationally.

150Completed Projects

A legacy for future generations in Türkiye and abroad.

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Major Projects and Strong Engineering Since 1974

At Kalyon İnşaat, we take a leading role in our sector guided by safety, sustainability and technological innovation. We apply the highest safety standards and minimize environmental impacts in all our projects. We closely follow technological developments and integrate the latest engineering solutions into our projects.

Our signature projects, including Marmaray, Istanbul Airport, the Northern Marmara Motorway, TANAP and Kalyon Karapınar Solar Power Plant, reflect our engineering vision and execution capabilities.

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Corporate Culture

Kalyon İnşaat's corporate culture is founded on integrity, transparency, diversity, quality and social responsibility.

Transparency and commitment to ethical values underpin all our business processes.
We encourage innovation by supporting diversity and creativity.
We develop projects that respond to local needs and social benefit.
We contribute to society's development through social responsibility.
We act with accountability and high ethical standards.

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Values That Shape the Future; Our Mission and Vision

Our Mission

Through our established engineering expertise, environmentally sensitive approach and working culture centered on people, we aim to improve society's quality of life, contribute to the sustainable development of cities and add value to our country's economic, social and environmental progress in every project we undertake.

We strive to offer all our stakeholders the best at all times by building reliable, durable and lasting structures to the highest technical standards.