Willem Geert Spiekman (7 September 1899 – 3 November 1975) was a Dutch trade union leader. Born in Rotterdam, his father, Hendrik, was prominent in the local labour movement. He worked in a number of office jobs before moving to Amsterdam in 1921, where he worked in the editorial section of Het Volk. He then became the assistant to Roel Stenhuis, leader of the Dutch Confederation of Trade Unions and general secretary of the International Federation of Factory Workers. Spiekman devoted much of his time to the international, acting as an organiser, interpreter and minute-taker. However, declining membership of the federation led Stenhuis to make him redundant in 1923.