Thomas Carey MacMillan (born 21 June 1948) was the longest serving President and CEO of CIBC Mellon,[1] and a Canadian businessman.
His eldest sister, Margaret Olwen MacMillan, is the Warden of St. Antony's College, Oxford.
His elder sister, Ann MacMillan, is Manager of the London Bureau of the CBC.
He also held positions of responsibility at Montreal Trust where he served as Executive Vice-President of Corporate Services, and at Chase Manhattan Bank of Canada where he held the positions of Vice-President, Corporate Banking and subsequently President and CEO.
Thomas MacMillan serves on, or has served on, the following Boards of Directors: After graduating from the University of Toronto Schools, Thomas MacMillan received his Bachelor's degree from Princeton University and a Master's degree from the London School of Economics and Political Science (LSE).