Robertson Buchanan (1770–1816) was a Scottish civil engineer from Glasgow.
He was the son of the Glasgow merchant George Buchanan, and his first wife Jane Gorvie. In the early 1790s he was working at Rothesay for David Dale. His interests spread out from mill machinery, to pumps and heating. He also went into bridge construction.
In 1808 Buchanan was working for Henry Houldsworth at Cranstonhill, building a large waterworks. The following year he set up in business at Port Dundas, and in 1810 he became a burgess of Glasgow. In 1811 he was working on an early railway proposal in Scotland, to run from Dumfries to Sanquhar.
- Essays on the Economy of Fuel and Management of Heat, 1810;
- A Practical Treatise on Propelling Vessels by Steam, Glasgow, 1816; and of
- Practical Essays on Millwork and other Machinery, Mechanical and Descriptive, 3 vols. published in 1814; edition by Thomas Tredgold, 1841; supplement to third edition by George Rennie, 1843.
- Moss, Michael S. "Buchanan, Robertson". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/3845. (Subscription or UK public library membership required.)
- British Listed Buildings, White Cart Bridge, Inchinnan Road, over Part of White Cart Water, Inchinnan Road.
- "Buchanan, Robertson". Dictionary of National Biography. London: Smith, Elder & Co. 1885–1900.
- Albert Edward Musson; Eric Robinson (1969). Science and Technology in the Industrial Revolution. Manchester University Press ND. p. 107 note 9. ISBN 978-0-7190-0370-7. Retrieved 1 May 2012.