Family name Kierans (Kierans 
) , in the entire world, is a rare cognomen. The family name Kierans is characteristic of Ireland, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and Canada. Much less frequently, Kierans is the forename as well as the last name.
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| Kierans | United Kingdom, Australia, Ireland, United States, Canada |
| thomas kierans Canadian mining engineer (1913-2013), CA (b. 1913) |
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| eric kierans Canadian politician (1914-2004), CA (b. 1914) |
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| grainne kierans Irish association football player and coach, IE (b. 1978) |
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| genevieve kierans author |
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| s j kierans researcher |
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| ciara kierans researcher |
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| andrea s kierans researcher |
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| arthur kierans Irish rally co-driver, IE |
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| jennifer kierans |
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| kim kierans |
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