The Eurobank Group is a financial organisation that operates in Greece, Cyprus, Luxembourg, Serbia, Bulgaria and UK. As of December 2018, the Eurobank Group counts, €58 billion in assets, 653 customer service locations in Greece and abroad, and 13,162 employees.The Euromerchant Bank SA (Ευρωεπενδυτική Τράπεζα ΑΕ,lit. transl. euro-investment bank) was founded in 1990. It took over 75% of EFG Private Bank (Luxembourg) S.A.'s operations, which was integrated into it 1994.Acquisitions in Greece included Interbank Greece S.A. in 1996-97 and the branch network of Credit Lyonnais Greece S.A., 99.8% of Cretabank in 1998, Bank of Athens in 1999 and 50.1% of Ergobank.

Alpha Bank is the second largest Greek bank by total assets, and the largest by market capitalization of €2.13 billion (as of 4 December 2018). It has a subsidiary and branch in London, England and subsidiaries in Albania, Cyprus and Romania. Founded in 1879, it has been controlled by the Costopoulos family since its inception.[citation needed] Currently Ioannis Costopoulos, grandson of original founder John F. Costopoulos, and nephew of Stavros Costopoulos, foreign minister in the government of Georgios Papandreou, is the honorary chairman.[citation needed] On 16 January 2015 Alpha Bank requested Emergency Liquidity Assistance (ELA) from the Bank of Greece.

Attica Bank S.A. (Greek: Attica Bank Ανώνυμη Τραπεζική Εταιρεία), formerly the Bank of Attica SA (Greek: Τράπεζα Αττικής AE), is engaged in the Greek banking sector. It is the fifth largest Greek bank but significantly smaller than the top four "systemic" banks. Its market capitalisation was 116 million Euro on 6 October 2017. Its headquarters are in Athens and its 54 branches are spread nationwide. Attica Bank S.A. was established in 1925. Ιt offers a full range of banking and investment products and services as well as deposits, insurance products, mutual funds and brokerage services, for individuals, small & medium enterprises and large companies.

AEGEAN BALTIC BANK S.A. is located in Maroussi, Greece and is part of the Depository Credit Intermediation Industry. AEGEAN BALTIC BANK S.A. has 100 employees at this location and generates $20.51 million in sales (USD). There are 3 companies in the AEGEAN BALTIC BANK S.A. corporate family.

The Bank of Greece (Greek: Τράπεζα της Ελλάδος Trapeza tis Ellados, abbreviated ΤτΕ) is the central bank of Greece. Its headquarters is located in Athens on Panepistimiou Street, but it also has several branches across the country. It was founded in 1927 and its operations started officially in 1928. The building that currently houses its headquarters was completed ten years later in 1938. The Bank of Greece is listed on the Athens Exchange

Piraeus Bank (Greek: Τράπεζα Πειραιώς) is a Greek multinational financial services company with its headquarters in Athens, Greece. Piraeus Bank's stocks are listed on the Athens Stock Exchange (ATHEX) since January 1918.Around 2015, Piraeus Bank was either the first or second bank in Greece by amount of outstanding loans and deposits.

The National Bank of Greece (NBG; Greek: Εθνική Τράπεζα της Ελλάδος) is a global banking and financial services company with its headquarters in Athens, Greece. 85% of the company's pretax preprovision profits are derived from its operations in Greece, complemented by 15% from Southeastern Europe. The group offers financial products and services for corporate and institutional clients along with private and business customers. Services include banking services, brokerage, insurance, asset management, shipping finance, leasing and factoring markets.

We envision the Cooperative Bank of Epirus as the organization that holds a leading position in the cooperative structure and pushes the development and progress of small and medium enterprises. We envision a Bank that is the first choice in the wider region of Epirus , works responsibly to strengthen the productive and business model of the regional economy and society and produces value for its partners, employees and customers. We want to be the Bank of our place , to promote progress, innovative entrepreneurship, production and quality services, sustainable development and exports.

Optima bank, is a banking and financial services institution in Greece. Optima bank launched in July 2019, following the acquisition of Investment Bank of Greece (IBG est. in 1999) from Ireon Investments, a subsidiary of MOTOR OIL Group (Hellas). Investment bank of Greece was a fully licensed Greek financial institution, operating mainly as one of the brokerage firms in Greece, offering a full spectrum of brokerage and investment banking services. Optima bank today, offers retail and corporate banking services and products. Optima bank HQ's are located in Maroussi of Athens (Aigialeias 32 and Paradissou street).