Konstanty Skirmunt (Russian: ?????????´? ??´???????? ???´?????) (30 August 1866 – 24 July 1949) was a Polish politician.
During 1907—1914 he was a member of the State Council of the Russian Empire.
He was a member of the Polish National Committee in Paris in 1917–1918, Polish ambassador in Rome in 1919–1921, Polish Minister of Foreign Affairs in 1921–22, and Polish ambassador in London in 1919–1934.