Kalyon Construction is the founding company of Kalyon Holding and one of Türkiye’s leading engineering and construction contractors. Since its establishment in 1974, the company has successfully delivered major transportation, railway, aviation, energy and environmental infrastructure projects both domestically and internationally.

Its railway portfolio includes high-speed railways, metro systems, light rail transit, commuter rail, underground stations and railway infrastructure, while its broader transport expertise spans airports, highways, tunnels, bridges and urban transport systems. The company also delivers turnkey engineering services, project management and complex infrastructure solutions for both public and private sector clients.