
The Acıbadem Healthcare Group is a Turkish healthcare institution, operating with 17.000 employees. It comprises of 21 hospitals and 16 medical centers. The group consists of a network of general hospitals, medical centers, outpatient clinics, an ophthalmology center and various laboratories.

ACS Mersin is the name of a glass factory in Mersin, Turkey. ACS stands for Anadolu Cam Sanayii

AKSA Power Generation is a Turkish corporation, that designs, manufactures, distributes, sells and services electrical power generators worldwide. The Aksa Power Generation headquarters is located in Istanbul, Turkey. It has three main manufacturing plants around world, which are located in three continents.

Arkas Container Transport is a Turkish shipping company, founded in 1902.

Aselsan, Aselsan A.Ş. is a Turkish defense corporation headquartered in Ankara, Turkey. Its main operating area is research, development and manufacture of advanced military products for air, land and maritime forces. The company is one of the major contractors of Turkish Armed Forces. Aselsan was ranked by Defense News magazine as 48th largest defense company in terms of revenue. Turkish Army Foundation is the founder and major stockholder.
Basak Agricultural Tractors, Earth Moving and Agricultural Machinery AG or Başak Traktör is a Turkish tractor manufacturer that is owned by the Japanese company Sanko group. The company produce a variety of field and orchard tractors. Their current line-up of 2x4 and 4x4 models consists of close to 20 models, factory's production capacity being approximately 10,000 units per year.

Beko is a Turkish major appliance and consumer electronics brand of Arçelik A.Ş. controlled by Koç Holding.

BiP is a freeware instant messaging application owned and developed by Turkcell. It allows users to send text messages, voice messages and video calling and it can be downloaded from App Store, Google Play, and Huawei AppGallery. BiP has over 53 million users worldwide and was first released in 2013.

BMC is one of the largest commercial and military vehicle manufacturers in Turkey. Its products include commercial trucks, buses, military trucks and armoured vehicles. The company was founded in 1964 with 26% partnership of UK's British Motor Corporation. It was taken over by Çukurova Holding of Turkey in 1989, and seized by the Turkish government's TMSF in 2013. BMC has been taken over with a final bid of TL 751M, by a partnership of 51% Turkish side and 49% Qatari side.

Çimsataş, an acronym for Çukurova İnşaat Makinaları Sanayi ve Ticaret A.Ş., is a manufacturer of construction machinery located in Mersin, Turkey.

Cola Turka is a cola brand from Turkish company Ülker that is also sold in Germany, Austria, the Netherlands, Belgium, France, Bosnia and Herzegovina, Cuba and Denmark.
Divan Group is a hotel group based in Turkey; its flagship is the Divan Istanbul next to Taksim Gezi Park. Founded in 1956, it is part of the Koç family's Koç Holding. In 2015 the Group had 15 hotels in Turkey, Iraq, Azerbaijan, and Georgia, with 6 more hotels in pipeline and plans to expand overseas to locations including New York City and London. It is affiliated to the Preferred Hotel Group.

DYO Boya Fabrikaları Sanayi ve Ticaret A.Ş. is an İzmir, Turkey-based company founded at Bornova in 1954 by Durmuş Yaşar and his two sons Selçuk Yaşar and Selman Yaşar – with managerial and technological assistance from Sadolin & Holmblad of Denmark.

Anadolu Efes Biracılık ve Malt Sanayii A.Ş. produces and markets beer and malt and non-alcoholic beverages in a wide geographical area comprising Turkey, Russia, the Commonwealth of Independent States (CIS), Europe, Central Asia and the Middle East. Anadolu Efes is a member of the Anadolu Group. Anadolu Group was founded in 1950 by the Özilhan and Yazıcı families. Exhibiting a rapid and sustainable growth since its inception, the Anadolu Group transformed into a holding company in 1969.

Estap A.Ş. is a company based in Istanbul, Turkey, specializing in the electronic enclosures industry.

Etox is the first Turkish automobile manufacturer dedicated exclusively to building sports cars. The company is based in Ankara, Turkey. Its first model, the Etox Zafer, is the second Turkish sports car after the Anadol STC-16, which was produced from 1973 to 1975.

Freebird Airlines is a Turkish charter airline based in Florya, Bakirköy, Istanbul. Its main base is Istanbul Airport with secondary bases at Antalya Airport and Dalaman Airport.

Galatasaray Mobile or GS Mobile is a Turkish virtual cellular service provider owned by Galatasaray SK that uses the Avea GSM network for coverage. The company slogan is "one team, one heart, one network".

Geliyoo is a Turkish multinational corporation specializing in Internet-related services and products founded in 2010 by Hakan Atabaş and Fatih Arslan. Some services include search, cloud computing, software and online advertising technologies.

Getir is a Turkish start-up founded in 2015. Through its mobile app, it offers an on-demand "ultrafast" delivery service for grocery items, in addition to a courier service for restaurant food deliveries.

Goldaş or Goldaş Jewellery is a Turkish jewellery fabricator and retail sales company. Goldaş markets its product offerings under multiple brand names including Goldas, Assortie, SilverD’sign, WeddingD’sign, Danthel, Chip Gold, and Chip Silver.

Güleryüz Karoseri Otomotiv Sanayi ve Tic. A.Ş, better known as Güleryüz, is a Turkish coachbuilder based in Bursa, which started the business by repairing coach bodies in 1967. The workshop run by a father and his three sons turned into a company in 1982.

Halkbank is a Turkish bank, first incorporated in 1933 as a state-owned bank. After growing throughout much of the twentieth century, it began absorbing smaller-sized state banks around the turn of the millennium. Halkbank is now a publicly traded company, although the majority stakeholder remains the Turkish government. A number of scandals and controversies involving the bank emerged in the 2010s, some of which culminated in arrests of its executives.

HAVELSAN is a Turkish software and systems company having business presence in the defence and IT sectors. It is headquartered in Ankara, Turkey, with subsidiary companies and offices around Turkey and abroad. Havelsan is mostly active in the fields of C4ISR, naval combat systems, E-government applications, reconnaissance surveillance and intelligence systems, management information systems, simulation and training systems, logistic support, homeland security systems and energy management systems.

Hospitadent', which has been active in the health care sector since 2006, offers service in various provinces of Turkey with more than 500 dentists and employees, 9 hospitals in total. Hospitadent is the biggest dental hospital group in Turkey. The hospital chain was founded by Ahmet Selvi, who currently chairs the company. The company owned one hospital in Istanbul in 2006.

Hunca Cosmetics was established in 1957 in Istanbul. The company's founding father is Adnan Hunca. It was created as a family company producing cosmetics and toiletries. The company is a major player in Turkey and is present in many cosmetics and toiletries, including hair care, liquid soap, deodorants, fragrances, men's pre-shave and colour cosmetics.
İDO Istanbul Fast Ferries Co. Inc. was founded in 1987 by the Istanbul Metropolitan Municipality. Originally established with a fleet of 10 seabuses built by the Kvaerner Fjellstrand shipyard of Norway, the İDO today has a fleet of 25 seabuses designed by Kvaerner Fjellstrand, Austal and the Damen Group; 10 high-speed car ferries designed by Austal and the Damen Group; 18 car ferries; 32 commuter ferries; and 1 large passenger ship. At present, the İDO is the world's largest commuter ferry operator with its 87-passenger ships and 86 piers. The company owns a total of 103 ships including its service vessels.

İstanbul Bank was a former Turkish bank. It was founded in 1953 with a founding capital of TL 30,000,000. It had the shares of Erdemir and Güneş Sigorta .Between 1979-1983 it was the sponsor of Yenişehir S.K. . It was merged to Ziraat Bank on 24 November 1983.

Katmerciler is a Turkish defense and automotive industry company established in 1985 in Izmir. Katmerciler produce besides Hızır 4x4 infantry mobility vehicle and TOMA (vehicle) fire trucks, environmental vehicles as well as transportation vehicles. Katmerciler on vehicle sub system production provider and solution partner of the world's automotive giants to truck manufacturers such as. Ford, BMC, Hyundai, Isuzu, Iveco, MAN, Mercedes, Mitsubishi, Renault, Scania, Volvo

Kavaklıdere is the oldest and best known winery in Turkey. Founded by the And family, it is located in Ankara and is named after a neighborhood in the city.

Koton is a Turkish multinational clothing company. As of 2015, the chain had over 362 retail stores in 25 countries.

Kristal Kola is a Turkish cola brand that is manufactured and distributed by Kristal Kola Ve Meşrubat San Tic A.Ş, based in Istanbul. The company was founded in 1996 and has four production plants.

Marmarabirlik is a Turkish olive production company. It was established on 28 June 1954 as a Union of Agricultural Sales Cooperative (UASC), cultivating, harvesting and marketing of olives with mutual assistance and cooperation of region's olive farmers. The founder members of Marmarabirlik were respectively Gemlik, Mudanya and Erdek Olive Agriculture Sales Cooperatives. Later that, Orhangazi, İznik, Edincik, Mürefte, and Marmara Island Olive Agriculture Sales Cooperatives were being involved to the union in various date, today, the working area extended from around İznik Lake to south coast of Marmara Sea then Mürefte, a total of eight members cooperatives that has evolved into a union.

Mavi is a Turkish brand of denim and jeans-wear founded in 1991, based in Istanbul, Turkey. The company manufactures jeans for both women and men, targeting a younger age group. The global operation is headquartered in Turkey, with subsidiaries in the USA, Canada, Germany, Netherlands, Russia and Australia.

The Mechanical and Chemical Industry Corporation, established in 1950, is a reorganization of government-controlled group of factories in Turkey that supplied the Turkish Armed Forces with military products.

Memorial Health Group (MHG) is a healthcare provider located in Istanbul, Turkey. MHG started operations in February 2000. It is the first hospital group in Turkey to receive the JCI Accreditation in March 2002 and renewed the accreditation in April 2005 and in May 2008. Main hospital complex (Okmeydani) has 55.000 square meter closed area and 203 bed capacity. Memorial also operates 3 outpatient clinics, one in the European side and the others in the Asian side of Istanbul. Memorial Suadiye Medical Centre opened its doors in 2003 in order to provide health care services on the Asian side as well.
Opet is a Turkish petroleum company engaged in the sale of commercial and industrial fuels, mineral oils, retail sales, warehousing and international sales. Opet Petroleum’s roots date back to the fuel distribution company "Ozturk Petrol" founded by Ozturk Family.

Otokar Otomotiv ve Savunma Sanayi A.Ş., also known simply as Otokar, is a Turkish bus and military vehicle manufacturer headquartered in Sakarya, Turkey. Otokar is a subsidiary of Koç Holding.

Petkim Petrokimya Holding A.Ş. is the leading petrochemical company of Turkey. Founded on April 3, 1965, the main plant complex is located in Yarımca, Izmit. From 1985 on a second complex has been constructed in Aliağa, İzmir.
PTT, an abbreviation for Posta ve Telgraf Teşkilatı, is the national post and telegraph directorate of Turkey. Formerly, the organization was named Posta Telgraf Telefon. After the privatization of the telephone telecommunications service business, the directorate was renamed, keeping its acronym. It is headquartered in Ankara, and is known as TURKISH POST internationally.

Saga Airlines was a charter airline based in Istanbul, Turkey, which served the tourism industry.

Sana is a Turkish margarine brand that was first released by Unilever's Turkey Branch in 1953 and now owned by Upfield. It is the Turkish variant of Country Crock. It is the first margarine that was wrapped up a packet in Turkey. As it had no other opponent in market and produced from soybean oil that was imported from the U.S., it became the leading margarine brand for decades. It is a generic brand for any margarine produced in Turkey. In Turkish, any margarine is often called Sana yağı. It is the bestseller margarine in the world.

Şekerbank A.Ş was founded in 1953 as the Sugar Beet Cooperative Bank in Eskişehir, Turkey. In 1956 the bank relocated to Ankara and was renamed to Şekerbank. The initial public offering of the bank was carried out in 1997, and in 2004 the bank relocated its headquarters again, this time to Istanbul, Turkey.

Sky Airlines was an airline which operated chartered flights. It was based in Antalya, Turkey, operating on behalf of tour operators on short and medium haul routes into Turkey.

Solimpeks is a Turkish company dedicated to manufacture and market solar thermal and photovoltaic thermal hybrid solar collectors worldwide. The company's broader product line is exported to 60 countries, with European Union countries comprising about 70% of sales.

Su Marine Yachts is a Turkish shipbuilding and Boat building company based in Istanbul.

Tofaş is a Turkish automaker which was established in 1968 by Vehbi Koç, who was the founder of Koç Holding, based in Bursa, where the manufacturing plant of the company is located. It is jointly owned by Stellantis and Koç Holding.

Turbo was a brand of chewing gum, produced by Turkish company Kent from late 1980s to 2007. Turbo's inserts, which featured the images of various vehicles, were a collectable fad from late 1980s to 1990s.

Türk Ekonomi Bankası (TEB), is one of Turkey’s oldest financial institutions. In addition to providing its customers with corporate, SME, commercial, treasury & capital market, retail, and private banking products and services, TEB also supplies investment, leasing, factoring, and portfolio management financial services and products through its subsidiaries and group companies.

Turkish Aerospace Inc. is the center of technology in design, development, manufacturing, integration of aerospace systems, modernization and after sales support in Turkey.

The State Railways of the Republic of Turkey, abbreviated as TCDD, is a government-owned national railway company responsible with the ownership and maintenance of railway infrastructure in Turkey, as well as the planning and construction of new lines. TCDD was formed on 4 June 1929 as part of the nationalisation of railways in Turkey.
İşbank, officially Türkiye İş Bankası, is a commercial bank in Turkey. It was the largest private bank in the country by the size of assets and equity, as well as by the number of branches and employees as of 30 June 2019. It was the first bank founded by the Turkish Republic. İşbank was ranked 96th in a survey of "The World's Biggest 1000 Banks”. It was ranked and 447 on the Forbes Global 2000 list for 2015. It had a gross profit for 2015 of TRY 3.023 billion and US$6.8 billion in Tier I Capital, as defined by Basel's Bank for International Settlements.

Turyol is a private ferry operator, which owns and operates urban and international ferry service in western Turkey, focused primarily around Istanbul. It is one of three private ferry operators in Istanbul, along with İDO and Dentur. Turyol maintains a fleet of 70 vessels, 60 of which are for scheduled passenger service. In terms of fleet size and number of lines, Turyol is the largest private ferry operator in Turkey and second largest overall, after the Istanbul Municipality's ferry operator Şehir Hatları.

Turkish Wagon Industry, Inc., more commonly known as TÜVASAŞ, is a railcar manufacturer based in Adapazarı. TÜVASAŞ is responsible for the construction, refurbishment and repair of railcars for the Turkish State Railways, and is a 100% shareholder of the Turkish State Railways, reporting directly to the Turkish Ministry of Transport.

Ugur Group Companies is a Turkish group of manufacturing companies.

Vakko is a Turkish fashion company. It produces and retails textiles, leather goods, and accessories.

VitrA is a Turkish manufacturer of sanitaryware, bathroom furniture, brassware and ceramic tiles. It is part of the Eczacıbaşı Group, a multinational corporation involved in building materials and consumer products.

Yüksel Tohumculuk is a Turkish plant breeding company, based in Antalya. It is the largest developer, marketer and producer of vegetable seeds in Turkey.
Ziraat Bank is a state-owned bank in Turkey founded in 1863.