Weetman Dickinson Pearson, 1st Viscount Cowdray, GCVO, PC, known as Sir Weetman Pearson, Bt between 1894 and 1910, and as Lord Cowdray between 1910 and 1917, was a British engineer, oil industrialist, benefactor and Liberal politician. He was the owner of the Pearson conglomerate.
Weetman Dickinson Pearson, a British engineer and a developer of the Mexican petroleum industry. In December 1889 he went to Mexico, where he drained swamps; built railways, power lines, waterworks, and harbours; and acquired much oil-rich land. He began drilling to obtain fuel for his locomotives and, in the first two decades of the 20th century, secured control of the Mexican oil industry. His firm built the Blackwall Tunnel under the Thames River, London, and several railroad tunnels under the East River, New York City; enlarged the Dover (England) harbour; and in 1926 completed a large dam on the Blue Nile in Sudan.