Banco Nacional Ultramarino

Banco Nacional Ultramarino (Chinese: 大西洋銀行; English: National Overseas Bank) was a Portuguese bank with operations throughout the world, especially in Portugal's former overseas provinces. It ceased existence as an independent legal entity in Portugal following its merger with Caixa Geral de Depósitos, the government-owned savings bank, in 2001.

The Bank continues operations today under the Banco Nacional Ultramarino brand in the Chinese SAR of Macau, a former Portuguese colony, where it is also licensed to issue Macanese pataca banknotes.