Cognomen Colleran (Colleran 
) , across the world, is quite a rare last name. The cognomen Colleran is characteristic of British Virgin Islands, where it is a common surname, Ireland, where it is quite a rare surname, and Australia, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in the United States, Ireland, and the United Kingdom.
| VARIANT | COUNTRY |
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| Colleran | Australia, United States, United Kingdom, Ireland, British Virgin Islands |
| noel colleran Gaelic football player, IE (b. 1944) |
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| emer colleran Irish microbiologist, IE (b. 1945) |
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| brendan colleran Gaelic football player, IE (b. 1948) |
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| mandy colleran British comedian, GB (b. 1962) |
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| ger colleran Irish journalist |
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| john colleran researcher ORCID ID = 0000-0001-5694-9010 |
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| paul colleran college basketball player (1965–1966) Fordham |
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| heidi colleran researcher |
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| bill colleran |
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