Banque Internationale à Luxembourg S.A. (BIL) founded in 1856, a key player in the Luxembourgish Financial Market. Founded in 1856, the bank was a major bank of Luxembourg. In 1982, the BIL opened a subsidiary in Singapore. The BIL was acquired by Dexia in 1999. In 2012 Dexia sold BIL for €730 million to Precision Capital, which also owned KBL European Private Bankers. In 2015, the BIL closed its Singapore subsidiary.

Banque Raiffeisen is a Luxembourgish banking and financial services company. Founded in 1926, it is one of the oldest banks in Luxembourg. The bank is independent from foreign shareholders. ISince its creation in 1926, Raiffeisen Luxembourg has become the first independent cooperative bank in the Grand-Duchy, covering the entire national territory.In 1970, The Luxembourg Raiffeisen network accounted 138 caisses across the country.

Intesa Sanpaolo S.p.A. is an Italian international banking group. It is Italy's largest bank by total assets and the world's 27th largest. Banca Intesa and Sanpaolo IMI, the two banks that merged in 2007 to create Intesa Sanpaolo, were themselves the product of many mergers. Cariplo and Banco Ambrosiano Veneto merged in 1998 to form Banca Intesa. The following year Banca Commerciale Italiana joined the group. Sanpaolo IMI was born in 1998 following the merger of Istituto Bancario San Paolo di Torino, which specialized in retail banking, and IMI (Istituto Mobiliare Italiano), an investment bank.

BGL BNP Paribas (formerly Banque Générale du Luxembourg or BGL) is a Luxembourg bank founded on 29 September 1919. Since May 2009, the bank has been a member of the BNP Paribas group. The Banque Générale du Luxembourg (BGL) was founded on 29 September 1919 by Société Générale de Belgique together with Luxembourg and Belgian partners. Its registered office was in Arlon, Belgium, and its head office in Luxembourg City. It quickly moved into new premises at 14, rue Aldringen. By 1928, it had become a large regional bank extending its operations to the neighbouring areas of Belgium and France. In 1935, its registered office was moved to Luxembourg where BGL became a Luxembourg corporation.

Eugène Péreire founded Banque Transatlantique in 1881, and today it is one of France's oldest private banks.Eugène Péreire, son of Isaac Péreire, founded Banque Transatlantique in 1881; it had 609 shareholders and total assets in excess of 50,000,000 francs. He created the bank in response to the French government's decision to cease state funding of transatlantic ventures. Thus, Pereire formed a private bank to complement his main management stake in the shipping line Compagnie Générale Transatlantique, which he and his brothers had founded in 1855 as the Compagnie Générale Maritime.

Advanzia Bank S.A was established in Luxembourg in 2005, subject to CSSF supervision, specializing in no-fee credit cards and euro savings accounts. The bank was established as a result of the former Founding Management of Bankia Bank seeking to establish an EU-based bank. This was accomplished with the previously largest shareholder of Bankia Bank, Kistefos, becoming the largest shareholder of Advanzia Bank. Tor Erland Fyksen, Jan Grenth, Jan Halvorsen, and Eirik Holtedahl have together with Dr. Thomas Schlieper set up the bank, which has quickly become the largest issuer of international credit cards in Germany.

Banque Havilland S.A. is a private bank headquartered in Luxembourg. It is owned by the Rowland family and provides services in private banking, wealth and asset management, fund services to private clients and institutions.Banque Havilland obtained a banking licence in Luxembourg in 2009.[3] David Rowland and his son Jonathan achieved this by obtaining the good bank of the failed Kaupthing Bank Luxembourg via their investment company Blackfish Capital. The bad bank was renamed Pillar Securitisation, for which Havilland acted as administrator.

The State Bank and Savings Fund (French: Banque et Caisse d'Épargne de l'État), also known by its Luxemburgish name Spuerkeess (lit. 'Savings Bank'), is the leading national financial institution founded in 1856 and governed by the law of March 24, 1989.Spuerkees was founded by Grand Duke William III as "Caisse d'Épargne de l'État du Grand-Duché de Luxembourg" due to a Law on February 21, 1856. The board of directors had three members and had their first meeting on August 18, 1859 under the presidency of Professor Nicolas Martha.

Banque de Luxembourg is a financial institution in Luxembourg, which primarily focuses on wealth management and high-net-worth individualsFounded in 1920, the history of Banque de Luxembourg is closely tied in with the rise of the financial centre of Luxembourg. 1920 : Banque d'Alsace et de Lorraine, later Crédit Industriel d'Alsace et de Lorraine (CIAL), opens its first branch in Luxembourg. 1937 : Banque Mathieu Frères, the forerunner of Banque de Luxembourg, is founded. 1969 : CIAL becomes a major shareholder in Banque Mathieu Frères.