- AFC Merchant Bank – The brainchild of the ASEAN Bankers Association, a regional banking organisation comprising all the national banking associations in ASEAN.
- Bank of India (Singapore) – It was established as the fourth foreign branch of the Bank of India in 1951. At Singapore, Bank of India specializes in trade finance, loan syndications, forex dealing, derivative products, remittance and India related business.
- Bank of Singapore – A wholly owned private banking subsidiary of OCBC Bank. The Bank serves high net worth individuals and wealthy families in Asia, Middle East and Europe.
- Citibank Singapore – A subsidiary of Citigroup, one of the world's largest financial institutions. Citi provides employment to more than 8,000 people, making it the largest banking employer in Singapore.
- DBS Bank – The largest bank in Singapore with over 80 branches in its home country and around 60 locations in Hong Kong, plus operations in China, India, Indonesia, Malaysia, Philippines, and Thailand.
- Islamic Bank of Asia – Established in May 2007, The Islamic Bank of Asia (IB Asia) is a joint venture between DBS Bank and 33 investors from prominent families and industrial groups based in the Gulf Cooperation Council countries. IB Asia focuses on Shariah compliant capital markets, direct investment, corporate finance and wealth management services.
- Far Eastern Bank – A subsidiary of United Overseas Bank Limited (UOB). The bank provides retail, commercial and corporate banking services.
- FinatiQ was set up in 2000 by OCBC bank as Asia's first e-bank. As an online-only service provider of OCBC Bank, FinatiQ could no longer meet the growing needs of the bank's customers and will cease business on 30 June 2011.
- HSBC Singapore provides a wide range of financial products and services to retail and corporate customers through about 20 locations including 9 full service branches.
- Keppel TatLee Bank was a financial provider in Singapore formed through a merger of Keppel Bank and Tat Lee bank in 1998. KTLB was formerly partially owned by Allied Irish Banks, and was sold to OCBC in 2001.
- Maybank Singapore – Maybank has the most extensive network of branches and ATMs among the foreign banks in Singapore. Maybank began operations in Singapore in 1960.
- Monetary Authority of Singapore (MAS) – Central Bank of Singapore.
- OCBC Bank – One of Asia's leading financial services groups, with group assets of S$224 billion. OCBC Bank is recognised by The Asian Banker as the Best Retail Bank in Singapore for the second consecutive year, and for Excellence in Customer Relationship Management (March, 2010).
- RHB Bank in Singapore – A universal bank with a network of 7 offices situated strategically in various locations. It was established in 1961 as UMBC (United Malayan Banking Corporation Berhad). RHB is the first and only bank in Singapore and Malaysia to be awarded the prestigious “Best Customer Experience Management of the Year Award” in banking service by APCSC Hong Kong.
- Singapore Island Bank – A wholly owned subsidiary of OCBC Bank. It has S$100 million in capital, and is governed under the Banking Laws and Regulation in Singapore.
- UOB (United Overseas Bank) – UOB provides a wide range of financial services through its network of 68 bank branches in Singapore and offices in 19 countries in the Asia-Pacific, Western Europe and North America.
- CIC Singapore – CIC offers a wide range of banking products and services in Singapore, including private banking, corporate and structured finance and treasury products.
Top Banks in Singapore by total assets
||M cap, S$bn 14/09/2012
||Oversea-Chinese Banking Corp.
||United Overseas Bank
All figures in billions of Singapore dollars