Sir Adrian William Maxwell Baillie, 6th Baronet (1898–1947) was a British MP for two constituencies.He was elected as Unionist Party (Scotland) MP for Linlithgowshire in 1931, but was defeated in 1935. He was then elected as Conservative MP for Tonbridge at a by-election in 1937, but stood down in 1945.He was married to Lord Queenborough's eldest daughter, Olive Cecilia. They had one child, the future 7th Baronet Baillie, but the marriage ended in divorce in 1944.