Category
page 1Companies based in Istanbul
Turkish Airlines
national flag-carrier airline of Turkey
Pegasus Airlines
Turkish low-cost airline headquartered in Pendik, Istanbul

Atlasglobal
AtlasGlobal, named Atlasjet until 31 March 2015, was a Turkish airline headquartered in Istanbul, which operated scheduled domestic and international passenger services as well as charter flights, mostly out of its base at Istanbul Airport. The airline filed for bankruptcy on 12 February 2020, and ceased operations permanently after that date.

Turkcell
Turkcell İletişim Hizmetleri A.Ş. () (, ) is the leading mobile phone operator of Turkey, based in Istanbul. The company has 39.3 million subscribers as of September 2021. In 2015, the company's number of subscribers climbed to 68.9 million, in nine countries. The largest shareholder is Turkey Wealth Fund with 26.2% ownership. It is one of the world's biggest companies (Fortune 2000) list published by Fortune. Turkcell has also developed Yaani, a browser for mobile and desktop. Turkcell's general manager is Ali Taha Koç.
Borsa Istanbul
Turkish stock exchange (2013-)
Freebird Airlines
charter airline based in Turkey.
Koç Holding
industrial conglomerate in Turkey
Onur Air
defunct Turkish airline (1992-2021)

İşbank
İşbank, officially Türkiye İş Bankası, is a commercial bank in Turkey. Founded by the orders of Mustafa Kemal Atatürk in 1924, it is the first bank to go into operation in the Republic of Türkiye.
LC Waikiki
Turkish clothing company and brand
Petrol Ofisi
fuel products distribution and lubricants company
Oriental Railway of the Ottoman Empire
Paris-based company that built and operated the railway lines in the Ottoman Empire's European territories
Sabancı Holding
company
Migros
supermarket chain in Turkey
VakıfBank
VakıfBank () is the second-largest bank in Turkey in terms of asset size, established with an initial capital of TL 50 million on January 11, 1954, and later started operating on April 13, 1954. Abdi Serdar Üstünsalih is CEO of the VakıfBank.

Birgenair
Birgenair was a Turkish charter airline established in 1988 with headquarters in Istanbul, Turkey. It ceased operations in October 1996, following the crash of Birgenair Flight 301.
TAV Airports Holding
airport Operator
Simit Sarayı
Turkish food company
Zorlu Holding Company
company
Metro Istanbul
public transportation company of Istanbul
Doğan Holding Company
Turkish conglomerate

ULS Airlines Cargo
Turkish cargo airline

Garanti BBVA
Turkish foreign capital private sector bank

Akbank
Akbank T.A.Ş. is one of the prominent banks in Turkey. Founded in 30 January 1948, , Akbank reported a consolidated net profit of TL 60 billion 26 million. Listed on the Borsa Istanbul, its largest shareholders are members of the Sabancı family. Akbank serves in the fields of corporate and investment banking, commercial banking, SME banking, consumer banking, payment systems, private banking, investment services and treasury transactions.
Denizbank
DenizBank A.Ş. () is a large private bank in Turkey. It is currently owned by Emirates NBD. It was owned and controlled by leading Russian bank Sberbank from 2012 to 2019. European financial services institution Dexia was the owner before this.
ENKA
company
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Eczacıbaşı
Eczacıbaşı Holding () is a Turkish industrial group of companies founded in 1942. As of 2023, the Group's 50 companies employ more than 13,500 people, operate 40 production plants, and generate a combined net turnover of TL 33 billion.
Yapı ve Kredi Bankası
Turkish private sector bank
İstanbul Deniz Otobüsleri
thumb|Routes operated by the İDO in the Sea of Marmara
Trendyol
İhlas News Agency
Turkish News Agency
Doğuş Holding
Turkish stock company based in Istanbul
Dicle News Agency
pro-Kurdish news agency in Turkey
Chemins de Fer Ottomans d'Anatolie
railway company
Koton
Turkish multinational clothing retailer
Avea
previous Turkish telecommunications company
Demirören Group
Turkish conglomerate company
Şekerbank
Şekerbank T.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. Şekerbank is a bank that provides consumer loans, vehicle loans, housing loans and commercial loans. Dr. Hasan Basri Göktan is the chairman of the board of Şekerbank.
Thessaloniki–Alexandroupolis railway
a main railway line in Greece
Erdem Architects
company
QNB
Turkish bank
Karpowership
Karpowership is a global power generation company that develops and operates floating power plants, as well as onshore energy projects and related infrastructure.
Bianet
Bianet (acronym for ) is an Independent news agency based in Beyoğlu, Istanbul. Focused on human rights in Turkey it is mainly funded by a Swedish organization. Bianet was established in January 2000 by journalists around , former representative of Reporters Without Borders, and left-wing activist Ertuğrul Kürkçü and is tied with Inter Press Service. It is mostly funded by the European Commission through the European Instrument for Democracy and Human Rights (EIDHR). Erol Önderoğlu served as the monitoring editor for Bianet for several years. His work for Bianet included quarterly reports on f
İhlas Holding
Turkish conglomerate
Vodafone Turkey
Turkish telecommunications company
Şişecam
Şişecam (official name: Türkiye Şişe ve Cam Fabrikaları) is a Turkish glass manufacturing company. In the 2020 fiscal year, the company operated 43 plants in 14 countries. In terms of production capacity, Şişecam is the largest flat glass manufacturer in Europe and the world's second-largest manufacturer of glass household goods such as drinking glasses according to its own estimates. The product range is supplemented by the production of packaging glass. The company is part of the BIST 100 index of the 100 largest companies listed on the Istanbul Stock Exchange by market capitalization. Aroun
Orbit Express Airlines
Tekfen Construction and Installation Co.Inc.
Turkish conglomerate based in Istanbul
Vakko
thumb|280px|Vakko Nişantaşı in Harbiye, Şişli, [[Istanbul Central Business District]]
Vakko is a Turkish luxury fashion company founded by Vitali Hakko (d. 2007) survived by his son Cem Hakko. It produces and retails textiles, leather goods, and accessories.
Türk Ekonomi Bankası
Turkish private sector bank
ICBC Turkey Bank
Foreign capital private sector Turkish bank
Profilo
Profilo Durable Household Appliances, or shortly Profilo, is a Turkish white goods and electronic products manufacturer founded in Istanbul in 1976. It is included in the BSH group.
Mavi Jeans
Turkish textile brand
Alarko Holding
business conglomerate in Turkey
Polimeks
Polimeks İnşaat ve Sanayi A.Ş. is a Turkish holding company based in Istanbul. Polimeks, established in 1995 and grew to become one of the world's leading construction companies, in recent years transformed into a global investment holding with activities in tourism, real estate, and renewable energy sectors. Polimeks primarily operates in Turkey, Russia, United Kingdom, Turkmenistan and the Netherlands.
Beymen
thumb|Beymen store in İstinyePark İzmir mall
Mezopotamya Agency
Kurdish news agency based in Beyoğlu, Istanbul
Fibabanka
Fibabanka is a Turkish financial bank specializing in corporate, commercial, SME and enterprise, retail, agricultural, and private banking. The bank's subsidiaries, Fiba Portföy Yönetimi A.Ş. and Finberg, allow it to diversify its products and services for customers. In addition to traditional banking services, Fibabanka provides consumer loans, vehicle loans, housing loans, and commercial loans.
Alternatif Bank
Turkish foreign capital private sector bank
Medical Park Hospitals Group
hospital network in Turkey