United Overseas Bank Limited (simplified Chinese: 大华银行有限公司; traditional Chinese: 大華銀行有限公司; pinyin: Dàhuá Yínháng Yǒuxìan Gōngsī; Pe̍h-ōe-jī: Tāi-hôa Gûn-hâng Iú-hān Kong-si), often known as UOB, is a Singaporean regional bank headquartered at Raffles Place, Singapore, with branches mostly found in Southeast Asia countries.

It has 68 branches in Singapore and a network of more than 500 offices in 19 countries and territories in Asia Pacific, Western Europe and North America.

[8] On 6 August 1935, Sarawak-born businessman Wee Kheng Chiang, together with six other partners, established the bank with a paid-up capital of S$1 million.

[12] In 1973, UOB acquired Lee Wah Bank, which provided services in Malaysia and Singapore.

[17] On 16 January 2019, UOB was listed in the Bloomberg Gender-Equality Index (GEI) for the first time in recognition of gender equality.

[18][19] On 14 January 2022, UOB purchased Citigroup's consumer banking franchise in Indonesia, Malaysia, Thailand and Vietnam for about S$5 billion.

UOB has branches and offices located across Asia Pacific, North America and Western Europe, with most of their operations located in Southeast Asian countries such as Brunei, Malaysia, Indonesia, Myanmar, Philippines, Thailand and Vietnam.

Incorporated on 18 December 2007 as UOB (China) and headquartered in Shanghai, UOB has 17 branches and sub-branches strategically located in major cities such as Shenyang, Shanghai, Beijing, Shenzhen, Tianjin, Xiamen, Hangzhou, Chengdu, Guangzhou, Suzhou and Chongqing offering retail and wholesale banking services.

[27] In December 2009, UOB opened its first branch in Mumbai, offering retail and wholesale banking services, including lending, treasury and trade finance products, to corporates, financial institutions and consumers.

The company also offers various fee-based services, such as purchase and sale of travellers cheques and banknotes.

[31] Incorporated in 1993, UOB Malaysia was integrated with Lee Wah Bank in 1994 to operate as a single entity.

[32] The bank offers commercial and personal financial services: deposits, unit trusts, UOB Bancassurance, privilege banking, e-banking, commercial lending, investment banking, treasury services, trade services, home loans, debit and credit cards, wealth management, structured investment, general insurance and life insurance.

[37] In 1983, UOB opened its first representative office in Seoul[38] and in 1998, the bank has a total of S$81 million assets in South Korea.

More ASEAN countries will get this service in the coming months, in a push to cater to millennials who mainly use mobile phones for banking.

[46][47] In May 2017, the Monetary Authority of Singapore (MAS) fined UOB a total of S$900,000 for several breaches of anti-money laundering rules and control lapses in transactions related to Malaysia’s scandal-ridden sovereign wealth fund 1Malaysia Development Berhad (1MDB).

[49][50] On 31 August 2022, the stockbroking arm of UOB – UOB Kay Hian Private Limited which is an associate company of UOB, was fined S$375,000 for failing to comply with business conduct requirements under the Securities and Futures (Licensing and Conduct of Business) Regulations, as well as anti-money laundering and countering the financing of terrorism requirements listed by the Monetary Authority of Singapore (MAS).