Arthur Brill (22 January 1883–19 September 1956) was a politician in the Free City of Danzig. Brill was the chairman of the Social Democratic Party of the Free City of Danzig between 1920 and 1936.[1] Brill represented Danzig in the executive of the Labour and Socialist International between January 1929 and 1936. Between July 1931 and 1934 he shared the seat with Johann Kowoll.[2]