William Chatham CMG MICE (July 1859–1941) was a Scottish-born engineer and government official of Hong Kong.
He was the Director of Public Works from 1901 to 1921, as well as member of the Executive and Legislative Councils and Vice-President of the Sanitary Board.
He was a member of the Queen's Jubilee Committee, acting as honorary secretary for some years and took part in the £20,000 construction of the Jubilee Road (today's Victoria Road) and the Hospital for Women and Children (later known as Victoria Hospital).
When Chatham retired in 1921, a valediction published in the Hong Kong Government Administration Report of 1921 stated that "The majority of the Public Works of the Colony as they exist today are standing monument to his energy and foresight.
Agnes married Edward Dudley Corscaden Wolfe, who was an Assistant Registrar-General and Police Magistrate in Hong Kong.