Cognomen Locklin (Locklin 
) , globally, is quite a rare surname. The surname Locklin is habitual in the United States, where it is a rare surname, Canada, and the United Kingdom, where it is a very rare surname. Much less frequently, Locklin is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Locklin | Canada, United Kingdom, United States, Colombia, Australia |
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henry n. locklin politician in Massachusetts, US, US (b. 1853) |
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lawrence hankins locklin American musician, US (b. 1918) |
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stu locklin American baseball player (1928-2016), US (b. 1928) |
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kerry locklin American football player and coach, US (b. 1959) |
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| billy ray locklin Player of American and Canadian football, US (b. 1937) |
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| gerald locklin American poet, US (b. 1941) |
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| loryn locklin American actress, US (b. 1965) |
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| jason locklin researcher ORCID 0000-0001-8434-4828 |
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| julia k locklin researcher |
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| vicky locklin British television presenter, GB |
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| jason locklin researcher (ORCID 0000-0001-9272-2403) |
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| _ locklin college basketball player (1948–1948) Wisconsin |
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