John Langdon may refer to:
- John Langdon (politician) (1741–1819), American politician from New Hampshire
- John Langdon (typographer) (born 1946), American typographer known for his ambigrams
- John Langdon Down (1828–1896), doctor
- John Langdon (bishop) (died 1434), English Bishop of Rochester
- John Langdon (driver) (born 1947), New Zealand harness race driver
Famous quotes containing the word john:
“Gracious Lord, oh bomb the Germans.
Spare their women for Thy Sake,
And if that is not too easy
We will pardon Thy Mistake.
But gracious Lord, whate’er shall be,
Don’t let anyone bomb me.”
—Sir John Betjeman (1906–1984)