Thomas Joseph Bray (May 1, 1867 − December 11, 1933) was an American engineer, inventor and corporate leader of the iron and steel industry, becoming president of the third largest steel company in the US – Republic Iron and Steel Company. He was a leading member of Youngstown society and lived in its historic Crandall Park where he prospered, raised a family and led a project to develop transport on the rivers of the area. He was an industrial leader of the Mahoning River steel industry.