Last name O'Hora (O'Hora 
) , in all the world, is a rare family name. The last name O'Hora is characteristic of Ireland, where it is quite a rare surname, Switzerland, where it is a rare surname, and Australia, where it is a very rare surname. In absolute terms, the name is most common in Ireland, the United States, and the United Kingdom.
| VARIANT | COUNTRY |
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| O'Hora | United Kingdom, Australia, Ireland, Switzerland, United States |
| jim o'hora American football player and coach (1915-2005), US (b. 1915) |
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| ronan o'hora British musician, GB (b. 1964) |
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| denis o'hora researcher |
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| jennifer o'hora researcher |
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| red o'hora American baseball player and coach |
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| pádraig o'hora Gaelic footballer |
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| warren o'hora Irish association football player, GB (b. 1999) |
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Mr, Dave, Dhsc, Lark, Liam, Jane, Josh, John, Joel, Jeff, Judy, Jill, Edel, Eric, Erin, Emer, Emma, Evan, Marie, Megan, Sarah, Simon, Ryan, Annie, Paul, Kate, Ms, Sue, Pat, Jos, Jon, Joe, Jim, Tom, Tim, Ian, Mary, Mark, Mike, Sara, Sean, Alan, Anna, Adam, Aine, Bill, Karl, Katy, and Anita