Ecobank Nigeria Limited, commonly referred to as Ecobank Nigeria, is a commercial bank in Nigeria. It is one of the commercial banks licensed by the Central Bank of Nigeria, the national banking regulator.

The bank began operations in 1989. It operates as a universal bank, providing wholesale, retail, corporate, investment and transaction banking services to its customers in the Nigerian market. The bank divides its operations into three major divisions: (a) Retail Banking (b) Wholesale Banking and (c) Treasury & Financial Institutions. The bank also offers capital markets and investment banking services. During the fourth quarter of 2011, Ecobank Nigeria through its parent company Ecobank Transnational Inc. (ETI) acquired 100% of the shareholding in Oceanic Bank, creating the expanded Ecobank Nigeria Limited. As of December 2011, the expanded Ecobank Nigeria controlled total assets valued at approximately US$8.1 billion (NGN:1.32 trillion), making it one of the five largest banks in Nigeria at the time. At that time the bank had 610 free-standing branches, making it the second-largest bank in the country by branch network.

Ecobank Nigeria is a member of Ecobank, the leading independent pan-African bank, headquartered in Lomé, Togo, with affiliates in West, Central, and East Africa. Ecobank, which was established in 1985, has grown to a network of over 1,000 branches, employing over 10,000 people, with offices in 32 countries including Benin, Burkina Faso, Burundi, Cameroon, Cape Verde, the Central African Republic, Chad, the Republic of Congo, the Democratic Republic of Congo, Côte d’Ivoire, Gambia, Ghana, Guinea, Guinea Bissau, Kenya, Liberia, Mali, Malawi, Niger, Nigeria, Rwanda, Sao Tome, Senegal, Sierra Leone, Togo, Uganda, Zambia and Zimbabwe. Ecobank also maintains a banking subsidiary in Paris and representative offices in Johannesburg, Dubai, and London.