Hanlon is a surname often associated with, but not necessarily tied to, the O'Hanlon Sept. The name may denote:

• Alf Hanlon (1866–1944), New Zealand lawyer
• Darren Hanlon, Australian folk musician
• George Hanlon, Australian horse trainer
• Glen Hanlon, Canadian ice hockey player and coach
• Jack P. Hanlon, Irish priest and artist
• John Hanlon (record producer), American record producer and recording engineer
• John Hanlon (singer), New Zealand singer-songwriter
• John J. Hanlon, American Catholic priest
• Michael Hanlon (1964–2016), British science writer
• Ned Hanlon (baseball), American baseball manager
• Ned Hanlon (politician), Australian politician
• Paul Hanlon, Scottish football player
• Philip J. Hanlon, American mathematician and President of Dartmouth College
• Richie Hanlon, fictional character from the TV series Oz
• Ritchie Hanlon, English football player and manager
• Tommy Hanlon Jr, Australian television personality

• Hannon
• O'Hanlon
• Hanlon's razor

• 'The O'Hanlons of Orior 1558-1691:Part II, Joseph Canning, Seanchas Ard Mhacha, 19, #1, pp.111-129, 2002.

This page lists people with the surname Hanlon.
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