Sir John de Graham of Dundaff was a 13th-century Scottish noble. He was killed during the Battle of Falkirk on 22 July 1298.
He was the son of David de Graham and Agnes Noble and was born in the lands of Dundaff, Stirlingshire, Scotland. During the Wars of Scottish Independence he fought alongside Sir William Wallace. Sir John de Graham fought at Stirling Bridge and Falkirk. He was one of several notable Scottish casualties at the Battle of Falkirk, along with Sir John Stewart, Lord of Bonkyll on 22 July 1298, when the Scottish forces were routed by Edward I of England's stronger force of cavalry.
He is buried at the Falkirk Old Parish Church, Stirlingshire, Falkirk, Scotland, with other fallen comrades. Sir John's gravestone and effigy can be found in Falkirk Old Parish Church. The inscription reads:
Here lyes Sir John the Grame, baith wight and wise,
Ane of the chiefs who rescewit Scotland thrise,
Ane better knight not to the world was lent,
Nor was gude Graham of truth and hardiment 
He gives his name to the Grahamston district in Falkirk, which gives its name to Falkirk Grahamston railway station.
A memorial fountain is located in Victoria Park Falkirk marking the spot where Sir John de Graham fell. A local historical Society has been created to promote the Scottish knight called "The Society of John De Graeme."
Family and issue
John married Marjory Halliday, and had the following known issue:
- John, Earl of Mentieth (d. 1347), married Mary II, suo jure Countess of Menteith, the daughter of Alan II, Earl of Menteith; had issue.
- Debrett, p. 678.
- Reid, Stuart (2004). Battles of the Scottish Lowlands. Barnsley: Pen & Sword Books Limited. p. 23. ISBN 9781844150786.
- Williams, Martin (13 August 2011). "Tomb of Wallace's finest knight is to be restored". The Herald. Glasgow. Retrieved 12 February 2019. CS1 maint: discouraged parameter (link)
- "Falkirk". Statistical Account of Scotland. 19. 1791–1799. p. 100.
- Debrett, John, "Debrett's Peerage, Baronetage, Knightage, and Companionage, Volume 2"; Kelly's Directories, 1822.