Last name O'Banion (O'Banion 
) , around the world, is a rare family name. The cognomen O'Banion is habitual in the United States, where it is a rare surname, New Zealand, where it is a very rare surname, and Canada. Measured by absolute frequency, it most frequently occurs in the United States, Canada, and Germany.
| VARIANT | COUNTRY |
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| O'Banion | Germany, Canada, New Zealand, United States |
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dean o'banion American mobster, US (b. 1892) |
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| john o'banion American singer (1947-2007), US (b. 1947) |
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| david o'banion researcher (ORCID 0000-0003-0617-0492) |
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| m k o'banion researcher |
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| shawn o'banion Ph.D. Northwestern University 2014 |
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| jim o'banion college basketball player (1952–1952) Texas State |
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| patrick j. o'banion (b. 1975) |
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