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:
“Take heed of enemies reconciled, and of meat twice boiled.”
—Collected in John Ray, English Proverbs. English proverb (1670)