Aiken (born 9 January 1949, in Sydney) is an Australian business executive.He holds a B.E degree in chemical engineering from University of Sydney, and has attended the Advanced Management Program from Harvard Business School.
Aiken was formerly Group President of BHP Billiton's energy business, and an executive director of BTR plc.
He held a number of senior positions in BOC Group plc, and was also a senior advisor to Macquarie Capital (Europe) Limited.
He also served as the chairman of Robert Walters plc from 2007 till 2012.