Surname Keohane (Keohane 
) , worldwide, is quite a rare cognomen. The last name Keohane is habitual in Ireland, where it is quite a common surname, the United Kingdom, where it is a rare surname, and Australia. Not in comparison with a country's population, it is the most numerous in the United States, Ireland, and the United Kingdom.
| VARIANT | COUNTRY |
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| Keohane | Canada, Australia, United States, United Kingdom, Ireland |
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patrick keohane Irish Antarctic explorer, IE (b. 1879) |
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| patrick keohane Irish politician, IE (b. 1870) |
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nannerl o. keohane American academic, US (b. 1940) |
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robert keohane political scientist from the United States, US (b. 1941) |
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| michael keohane American Paralympic athlete, US (b. 1901) |
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| jerome keohane (b. 1907) |
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maria keohane Swedish singer, SE (b. 1971) |
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| kevin keohane British physicist, science educator and educational administrator (b. 1923) |
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jimmy keohane Irish footballer, IE (b. 1991) |
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| daniel g. keohane US (b. 1963) |
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| john keohane Irish rower, IE (b. 1978) |
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| colum keohane researcher |
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| david keohane researcher (ORCID 0000-0003-2231-0029) |
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| michael keohane Irish racing driver, IE (b. 1980) |
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| aoife keohane researcher |
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