Family name Maclaughlin (Maclaughlin 
) , globally, is quite a rare surname. The last name Maclaughlin is characteristic of Canada, where it is a rare surname, Australia, and Ireland. Measured by absolute frequency, it is the most numerous in the United States, Canada, and the United Kingdom.
| VARIANT | COUNTRY |
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| Maclaughlin | Canada, Australia, United States, United Kingdom, Argentina |
Mclaughlin, Mclaughliñ, Маклохлин, and マクラフリン
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john maclaughlin fencer, US (b. 1890) |
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don maclaughlin American actor (1906-1986), US (b. 1906) |
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steve maclaughlin All-American college football player, professional football player, placekicker, US (b. 1971) |
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| harry h. maclaughlin United States federal judge, US (b. 1927) |
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| megan maclaughlin (b. 1954) |
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| kathy l maclaughlin researcher (ORCID 0000-0001-8241-7587) |
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| nina maclaughlin writer |
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| eric j maclaughlin researcher |
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| alexander maclaughlin Peerage person ID=603006 |
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| richard maclaughlin college basketball player (1957–1958) Muhlenburg |
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| douglas e maclaughlin researcher |
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| helen l maclaughlin researcher |
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| shane maclaughlin researcher |
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| eleanor maclaughlin (died 1947) |
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| owen maclaughlin Peerage person ID=331863 |
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