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:
“Whither goest thou?”
—Bible: New Testament Peter, in John, 13:36.
The words, which are repeated in John 16:5, are best known in the Latin form in which they appear in the Vulgate: Quo vadis? Jesus replies, “Whither I go, thou canst not follow me now; but thou shalt follow me afterwards.”