Last name O'Fallon (O'Fallon 
) , in all the world, is a rare surname. The last name O'Fallon is characteristic of New Zealand, where it is a rare surname, the United States, where it is a very rare surname, and Japan. Not in comparison with a country's population, it is the most numerous in the United States, Japan, and Canada.
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| O'Fallon | Canada, New Zealand, United States, Japan |
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john o'fallon American philanthropist, US (b. 1791) |
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| james o'fallon Bishop of Elphin (b. 1756) |
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| w. michael o'fallon Ph.D. The University of North Carolina at Chapel Hill 1967, US (b. 1934) |
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| peter o'fallon American television director, US (b. 1953) |
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| william o'fallon Peerage person ID=508245 |
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| timothy o'fallon researcher (ORCID 0000-0001-9267-9126) |
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| elsbeth swain o'fallon researcher |
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| brendan o'fallon Ph.D. University of Utah 2008 |
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| virginia o'fallon American artist |
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| cecilla o'fallon (died 1776) |
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| judith marie rich o'fallon American statistician |
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Ms, Glen, Lara, Liam, Lori, Jack, John, Joan, Jody, Eric, Erin, Herb, Maura, Molly, Sandy, Shane, Shawn, Stacy, Chris, Chloe, Ceara, Clyde, Gary, Dawn, Ryan, Rick, Pj, Sau, Ann, Kim, Pat, Pam, Dan, Lee, Joe, Jim, Cindy, Tom, Mary, Matt, Mike, Sara, Shon, Seth, Sean, Kara, Kimm, Paul, Tim, and Bobby