Arthur Williams (born 1899) was a British trade unionist.
He joined the Ship Constructive and Shipwrights' Association during World War I.
In 1940, he began working full-time for the union, and also won election to its executive committee.
This led Williams to agree to agree to a Trades Union Congress proposal that the union merge into the United Society of Boilermakers, Shipbuilders and Structural Workers.
He remained secretary of the union's new shipwrights section until his retirement, at the end of 1964.