The Bank of Williams and Rowland was a bank established in the 19th century and operating in Neath, in south Wales.

The Bank was formed as a result of a business association between Rees Williams of Aberpergwm House, Glynneath, and John Rowland, both well respected local businessmen, in around 1821.^[1] The Bank lasted for nearly 30 years and weathered the Panic of 1825, which wrecked many other banks.^[1] The Bank's notes came to be used locally by ‘Country Gentlemen and Farmers’ more so than the Bank of England’s notes.^[1] The Bank merged with the Glamorganshire Banking Company in 1836.^[1]