John Loudon is the name of:
- John Loudon (minister) (1866–1955), Dutch foreign minister (1913–1918)
- John Claudius Loudon (1783–1843), Scottish botanist
- John William Loudon (born 1967), Missouri state senator
- John Loudon McAdam (1756–1836), Scottish inventor of the Macadam Road Surface
Famous quotes containing the word john:
“a notable prince that was called King John;
And he ruled England with main and with might,
For he did great wrong, and maintained little right.”
—Unknown. King John and the Abbot of Canterbury (l. 2–4)