John Hennessy

John Hennessy is the name of the following people:

• John Hennessy (Archbishop) (1825-1900), Irish-American clergyman, Archbishop of Dubuque
• John Joseph Hennessy (1847–1920), Irish clergyman, Bishop of Wichita
• John L. Hennessy (* 1952), American computer scientist, President of Stanford University
• John Pope-Hennessy (1913–1994), British art historian and director of the British Museum in London

This is a disambiguation page for differentiating between several terms identified with the same word.