J. Thomas Looney (1870–1944), originator of the Oxfordian theory regarding the authorship of Shakespeare's plays
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John Patrick Looney (1867–1947), gangster in the Rock Island, Illinois area during the early 1900s
John F. Kennedy | Pope John Paul II | Elton John | John | John Lennon | John Wayne | John McCain | John Kerry | John Cage | Olivia Newton-John | John Williams | John Peel | John Adams | John Steinbeck | John Travolta | John Milton | John Zorn | John Marshall | John Howard | Looney Tunes | John Singer Sargent | John Ruskin | John Updike | John Maynard Keynes | John Coltrane | John Cleese | St. John's | John Waters | John Lee Hooker | John Huston |
Looney served as the model for John Looney, a major character in Max Allan Collins' graphic novel Road to Perdition.