James Douglas (7 September 1878 – 4 December 1956) was a diplomat and Polish independence activist.

James Douglas was born on 7 September 1878 in the Russian Empire, within the area of modern Ukraine.

There, together with Józef Piłsudski and Tytus Filipowicz, he was also a part of a diplomatic mission on by the Polish Socialist Party.

During the interwar period he worked in the diplomatic service of Poland, including being a consul in Harbin, China from 1931 to 1933.

[3] His son, Jakub Douglas (1920–1998) fought in the Warsaw Uprising during the Second World War, and his grandson, Jerzy Hardie-Douglas (born 1951) is a politician, who was a member of the Sejm of Poland from 2019 to 2023.