Glenalvon House is a heritage-listed homestead located at 8 Lithgow Street, Campbelltown in the City of Campbelltown local government area of New South Wales, Australia. It was designed and built in 1841 by Michael Byrne. It is also known as Glenalvon and Glenalvon and Stables. The property is owned by Department of Planning and Infrastructure, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 2 April 1999.