Adrianus Dingeman (Adriaan) de Groot (Santpoort, 26 October 1914 – Schiermonnikoog, 14 August 2006) was a Dutch chess master and psychologist, who conducted some of the most famous chess experiments of all time in the 1940s-60. In 1946 he wrote his thesis "Het denken van den schaker", which in 1965 was translated into English and published as "Thought and choice in chess". De Groot played for the Netherlands in the Chess Olympiads of 1937 and 1939. In 1973 he became member of the Royal Netherlands Academy of Arts and Sciences.