Cognomen Grenan (Grenan 
) , around the globe, is a very rare surname. The surname Grenan is habitual in Norway, where it is a rare surname, France, where it is a very rare surname, and the United Kingdom. Measured by absolute frequency, the name is most common in the United States, Norway, and France. Much less frequently, Grenan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grenan | Norway, United Kingdom, Brazil, France, United States |
| pierre grenan FR (b. 1660) |
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| bénigne grenan French writer, FR (b. 1681) |
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| julia grenan Irish nationalist, suffragette and socialist, IE (b. 1884) |
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| serge grenan |
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Mr, Angela, Kandra, Kristy, Philip, Joseph, Michael, Shamiko, Kristin, Gregory, Leonora, Lindsay, Olivier, Michelle, Stacy-Ann, Roderick, Irene, Christine, Nancy, James, Ms, Deja, Jack, John, Numa, Marie, Mandy, Shaun, Stacy, Chris, Brian, Katie, Kelly, Paula, Laura, Tyler, and Katherine