Almon Secord Rennie (17 August 1882 – 26 October 1949) was a Canadian businessmand and politician. Rennie was a Liberal party member of the House of Commons of Canada. He was born in Linwood, Ontario and became a merchant by career. Rennie attended schools at Linwood, then Westervelt Business College in London. In 1928 and 1929, he served as Ontario Grand Master for the Independent Order of Odd Fellows, and at one point chaired the association's Home Board based in Toronto. From 1922 to 1924, Rennie was mayor of Tillsonburg, Ontario, and served as a deputy reeve for Oxford County council.