Mackenzie House is a heritage-listed house located at 29 Fitzgerald Street, Windsor, City of Hawkesbury, New South Wales, Australia. It was added to the New South Wales State Heritage Register on 2 April 1999.
Mackenzie House was built c. 1915. At one stage it was used to house the rector of the adjacent Windsor Uniting Church.It now houses a psychology and psychiatry practice.
Mackenzie House was listed on the New South Wales State Heritage Register on 2 April 1999.