Caroline Arnott  Dame Caroline Sydney Williams Arnott, DBE, OStJ, JP (bapt. 17 May 1859 – 28 December 1933) was an English philanthropist. Arnott was born in Bath, Somerset, the daughter of Sir Frederick Williams, 2nd Baronet, 2nd Bt., of Tregullow. She married Major Sir John Alexander Arnott, 2nd Bt. (16 November 1853 – 26 July 1940), son of Sir John Arnott, 1st Bt. and Mary ("née" McKinlay), on 27 September 1881, publisher of the "Irish Times". He held the office of Justice of the Peace (JP) for County Cork and of Deputy Lieutenant (DL) of County Cork. She spent her married life in Dublin, where she was active in charitable causes, including raising £50,000 () for an Irish War Memorial for the First World War. She was invested as a Lady of Grace, Order of St John of Jerusalem (LGStJ). She held the office of Justice of the Peace (JP). In 1918, she was invested as a Dame Commander of the Order of the British Empire when she was vice president of the Soldiers and Sailors Help Society, Dublin, for her war work. Dame Caroline Arnott died on 28 December 1933 in Leicester. She was buried in Saint Fintan's Cemetery in Sutton, Dublin, Ireland.