Banco Patagonia is an Argentine commercial bank headquartered in Buenos Aires. The company operates in the individual, as well as small and medium-sized business banking segments, and has currently more than 775,000 clients. Banco Patagonia was established as a brokerage house in 1976. Following its entry into the auto loan sector in 1987, it became a commercial bank (Banco Mildesa) in 1988. Mildes grew with the 1996 acquisition of the newly privatized Banco de Río Negro, and was renamed after the latter province's region of Patagonia, in 2000.

The Bank of the Province of Buenos Aires (Spanish: Banco de la Provincia de Buenos Aires), better known as Banco Provincia, is a publicly owned bank in Argentina and the second-largest in the country by value of assets and deposits. The progressive Governor of the Province of Buenos Aires, Martín Rodríguez proposed a meeting to study the feasibility of a provincial bank for the purpose of stabilizing the local economy wrecked by the Argentine War of Independence and the ensuing chaos. The bank today operates 342 branches and is Argentina's second-largest by deposits (holding US$10 billion, or, 8% of the total) and total assets, and the sixth-largest in lending with a US$5 billion loan portfolio (a 6% share).

Banco Santander Argentina (formerly Banco Río de la Plata and then Banco Santander Río) is a commercial bank and financial services company and affiliate of the Santander, Cantabria (Spain) based Santander Group. Based in Buenos Aires, its banking operations are the third largest in Argentina, as well as the largest among all privately owned banks in the country. The "Banco Río de la Plata" (named for the neighboring estuary of the same name) was established on May 14, 1968, via the acquisition of the Banco del Este by Pecom, a private holding company owned by the Pérez Companc family.

Founded on October 14, 1886, in Buenos Aires as Banco Francés del Río de la Plata (English: French Bank of the River Plate), it is the oldest private bank in Argentina. Its Beaux-Arts headquarters, designed by Jorge Bunge, were inaugurated in 1926. Despite the nation's economic woes during the 1980s, the Banco Francés expanded from 15 branches to 62 during the decade, and entered into a joint venture with Bankers Trust Company in 1986. Alpargatas sold its stake to local developer Eduardo Constantini in 1991, and entered into a second joint venture with Merrill Lynch in 1992.

The BNP Paribas Group was created in 2000 with the merger of Banque Nationale de Paris (BNP) and Paribas. In this way, the new group inherited the activities of two of the largest banks: BNP, the first French bank, whose origins date back to 1848, and Paribas, a commercial and investment bank founded in 1872. The history of BNP Paribas with its wide range of different traditions highlights one of the distinctive characteristics of the Group, its ability to get the best out of everyone while respecting the identity of each individual.

Banco Hipotecario (BCBA:BHIP) is a commercial bank and mortgage lender in Argentina. The institution was chartered on September 24, 1886, as the Banco Hipotecario Nacional (National Mortgage Bank) by a bill (Law 1804) signed by President Julio Roca. The bank pioneered mortgage lending on extended, low-interest terms in Argentina, and thus contributed to consolidating a modern Argentine economy (a policy centerpiece of the Generation of '80, as Roca and his allies were known).

Banco Macro began operations as Financiera Macro, a brokerage specializing in arbitrage founded by Mario Brodersohn, José Dagnino Pastore and Alieto Guadagni, in 1976. The institution was purchased by a competing arbitrageur, Jorge Brito, in 1985.[3] Granted authorization to operate as a commercial bank by the Central Bank of Argentina in 1988, Banco Macro operated as a wholesale bank until 1995, becoming a pioneer in the Argentine corporate bonds market. During this interim. its business revolved around money market investments, trading of government and corporate bonds and financial services for medium and larger companies.

One of the largest private sector commercial banks in Argentina, as measured by deposits, assets and loans. As of March 2017, the Group had US$17 billion in total assets and US$9.5 billion in deposits and US$10.3 billion in loans.

Central Bank of Argentina (BCRA) was established on May 28, 1935 and replaced the country’s Currency Board. The purpose of the Central Bank is to promote monetary and financial stability, and economic development with social equality. As of March 2017, Argentina's foreign-exchange reserves are estimated to be US$52 billion.

Banco de la Nación Argentina (English: Bank of the Argentine Nation) is a national bank in Argentina, and the largest in the country's banking sector.The Bank of the Argentine Nation was founded on 18 October 1891 by President Carlos Pellegrini, with the purpose of stabilizing the n ation's finances following the Panic of 1890; its first director was Vicente Lorenzo Casares. In its early decades it became a leading financing source for agricultural smallholders, and later for commercial and industrial businesses, as well as handling an array of public sector transactions.