| Tekfen İnşaat ve Tesisat A.Ş. | Contracting and construction | 1.425.200.000 | 1.425.181.952 | TRY | 99,99 | Subsidiary |
| Tekfen İmalat ve Mühendislik A.Ş. | Manufacturing | 113.903.999 | 113.903.999 | TRY | 100 | Subsidiary |
| Tekfen Mühendislik A.Ş. | Engineering | 20.000.000 | 20.000.000 | TRY | 100 | Subsidiary |
| Toros Tarım Sanayi ve Ticaret A.Ş. | Fertilizer manufacturing and terminal operations | 748.500.000 | 748.365.112,3 | TRY | 99,98 | Subsidiary |
| Toros Terminal Servisleri ve Denizcilik A.Ş. | Service providing | 50.000 | 50.000 | TRY | 100 | Subsidiary |
| Toros Adana Yumurtalık Serbest Bölgesi Kurucu ve İşl. A.Ş. | Service providing | 2.700.000 | 2.700.000 | TRY | 100 | Subsidiary |
| Toros Gemi Acenteliği ve Ticaret A.Ş. | Ship agency | 650.000 | 650.000 | TRY | 100 | Subsidiary |
| Tekfen Turizm ve İşletmecilik A.Ş. | Service providing | 2.000.000 | 2.000.000 | TRY | 100 | Subsidiary |
| Tekfen Sigorta Aracılık Hizmetleri A.Ş. | Insurance brokerage | 1.610.000 | 1.610.000 | TRY | 100 | Subsidiary |
| Azfen Birge Müessesesi | Manufacturing | 276.885 | 110.754 | AZN | 40 | Business Partnership |
| Tekfen International Finance and Inv. SA | Investment | 271.300.000 | 271.300.000 | USD | 100 | Subsidiary |
| HMB Hallesche Mitteldeutsche BAU AG | Trade | 50.000.000 | 50.000.000 | EUR | 100 | Subsidiary |
| Cenub Tikinti Servis ASC | Contracting | 1.323.694 | 675.084 | AZN | 51 | Subsidiary |
| Tekfen Tubin Özdemir JV | Contracting | 0 | 0 | TRY | 70,65 | Joint Venture |
| Tekfen TML JV | Contracting | 0 | 0 | TRY | 66,66 | Joint Venture |
| Gama Tekfen Tokar JV | Contracting | 0 | 0 | TRY | 35 | Joint Venture |
| Tekfen Teknoloji Yatırım ve Ticaret A.Ş. | Investment | 300.000.000 | 300.000.000 | TRY | 100 | Subsidiary |
| Tekfen Ventures LP | Investment | 50.000.000 | 50.000.000 | USD | 100 | Subsidiary |
| Tekfen Venture Management LLC | Managment service | 0 | 0 | USD | 100 | Subsidiary |
| Doğuş - Tekfen Adi Ortaklığı | Contracting | 0 | 0 | TRY | 50 | Joint Venture |
| Tekfen-Al Jaber Engineering | Contracting | 0 | 0 | QAR | 50 | Joint Venture |
| Alanar Meyve ve Gıda Üretim Pazarlama Sanayi ve Ticaret A.Ş. | Product fruit | 305.000.000 | 305.000.000 | TRY | 100 | Subsidiary |
| Mersin Serbest Bölge Kurucu ve İşleticisi A.Ş. | Service providing | 259.303.680 | 24.796.800 | TRY | 9,56 | Financial Investment |
| Antalya Serbest Bölge Kurucu ve İşleticisi A.Ş. | Service providing | 26.730.000 | 2.673.000 | TRY | 10 | Financial Investment |
| Akmerkez Gayrimenkul Yatırım Ortaklığı A.Ş. | Real estate investment trust | 37.264.000 | 3.901.279,04 | TRY | 10,47 | Financial Investment |
| Üçgen Bakım ve Yönetim Hizmetleri A.Ş. | Service providing | 50.000 | 13.724,95 | TRY | 27,45 | Financial Investment |
| Türkiye Sınai Kalkınma Bankası A.Ş. | Banking facilities | 2.800.000.000 | 1.313.792 | TRY | 0,047 | Financial Investment |
| Akçansa Çimento Sanayi ve Ticaret A.Ş. | Manufacturing cements | 191.447.068,25 | 5.538,32 | TRY | 0,003 | Financial Investment |
| Turcas Petrol A.Ş. | Fuel trading | 255.600.000 | 4.771,36 | TRY | 0,002 | Financial Investment |
| Toren Doğalgaz Depolama ve Madencilik A.Ş. | | 22.000.000 | 550.000 | TRY | 2,50 | Financial Investment |
| Gaz Depo ve Madencilik A.Ş. | | 21.650.000 | 541.250 | TRY | 2,50 | Financial Investment |
| Akmerkez Lokantacılık Gıda San. ve Tic. A.Ş. | Restaurant Management | 100.000 | 30.501,83 | TRY | 30,50 | Financial Investment |
| Denkmal in Dahlem Otto-Hahn-Platz GmbH | Contracting | 25.000 | 22.220 | EUR | 88,88 | Subsidiary |
| OOO Rusfen | Contracting | 5.324.374.532 | 5.324.374.532 | RUB | 100 | Subsidiary |
| Toros Agroport Romania S.A | Fertilizer trading | 54.000.000 | 54.000.000 | RON | 100 | Subsidiary |
| CFS Petrokimya Sanayi A.Ş. | Investment | 15.000.000 | 15.000.000 | TRY | 100 | Subsidiary |
| Techinvestments MMC | Investment | 170.300.000 | 170.300.000 | AZN | 100 | Subsidiary |
| Istek Construction | Contracting | 110.000 | 55.000 | KZT | 50 | Joint Venture |
| Tekfen - T Engineering Ortak Girişimi | Contracting | 0 | 0 | TRY | 85 | Joint Venture |
| Cording Dortmund Hiltropwall SCSp | Contracting | 0 | 0 | EUR | 12,58 | Financial Investment |
| Berlin Light JV S.a.r.l | Contracting | 27.196.561 | 3.110.779 | EUR | 11,44 | Financial Investment |
| Gate Construction | Contracting | 100.000 | 100.000 | KZT | 100 | Subsidiary |
| SOCAR Polymer Investments LLC | Production of petrochemical products | 375.380.000 | 37.538.000 | USD | 10 | Financial Investment |
| EURL Tekfen Algerie | Contracting | 20.000.000 | 20.000.000 | DZD | 100 | Subsidiary |
| Tekfen Contruction and Installation W.L.L | Contracting | 1.000.000 | 490.000 | QAR | 49 | Subsidiary |
| Tekfen Engineering USA Inc. | Engineering | 1.000 | 1.000 | USD | 100 | Subsidiary |
| Tekfen Engineering UK Ltd | Engineering | 1 | 1 | GBP | 100 | Subsidiary |
| Tekfen Derince Gayrimenkul A.Ş. | Investment | 38.000.000 | 38.000.000 | TRY | 100 | Subsidiary |
| Tekfen Taşınmaz Yatırım ve Yönetim A.Ş. | Investment | 121.000.000 | 121.000.000 | TRY | 100 | Subsidiary |
| Tekfen Yenilenebilir Enerji Çözümleri A.Ş | Energy | 10.000.000 | 10.000.000 | TRY | 100 | Subsidiary |
| Babadağ Elektrik Üretim Sanayi A.Ş. | Energy | 151.000.000 | 151.000.000 | TRY | 100 | Subsidiary |