Mary Stewart Macklin CBE is a Scottish businesswoman, entrepreneur and property developer, who is Founder and executive chair of The HALO Urban Regeneration.

The KLIN Group is a Scottish property development, regeneration and investment company founded in 1988 by John Dick. The companies main HQ and offices are located in the Bonnyton area of Kilmarnock, East Ayrshire at Barclay House, the former offices of Andrew Barclay Sons & Co. The company today is a second generational family business, with Dick's daughter, Marie Macklin CBE, having been CEO of the company from 2003 until 2014, at which point she sold the company to Drew Macklin. Drew Macklin currently serves as a director of the company, having been appointed to the role on June 1, 2011.