Rev. Matthew Armour (12 April 1820 – 23 March 1903) was a radical Free Church of Scotland minister on the island of Sanday, Orkney, remembered to this day for supporting the island’s crofters.
- Centenary of a Radical Kirk Minister by Dr Stephen Clackson, The Orcadian. 6 March 2003. 
- Sanday Church History. by Rev Alexander Goodfellow, W.R. Mackintosh (Kirkwall). 1912.
- Two Old Pulpit Worthies by Rev Alexander Goodfellow, W.R. Rendall (Stromness). 1925.
- An Orkney Anthology - The Selected Works of Ernest Walker Marwick, Vol. 1. edited by John D.M. Robertson, Scottish Academic Press (Edinburgh). 1991. ISBN 0-7073-0574-8