Charles Lindsay Orr-Ewing (8 September 1860 – 24 December 1903) was a Scottish Tory politician. The youngest son of Sir Archibald Orr-Ewing and Elizabeth Lindsay Reid; he was educated at Harrow School. After travel in the East, he was commissioned as a captain in the 3rd Argyll and Sutherland Highlanders. He was Member of Parliament for Ayr Burghs from 1895, until he died of heart failure in 1903 aged 43.