John Brennan

John Brennan is the name of the following people:

• John Brennan (track and field athlete) (1879–1964), American track and field athlete
• John Joseph Brennan (1913–1976), Northern Irish politician
• John Needham Huggard Brennan, pen name John Welcome (1914-2010), Irish writer
• John O. Brennan (born 1955), American government official
• John P. Brennan (1864–1943), American politician
• John Wolf Brennan (* 1954), Irish-Swiss jazz musician and composer

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