Last name St. Clair (St. Clair 
) , in the world, is a rare surname. The last name St. Clair is characteristic of Latin America and the Caribbean, particularly Saint Lucia, where it is quite a common surname, Trinidad and Tobago, where it is quite a rare surname, and Nicaragua, where it is a rare surname. Measured by absolute frequency, it is the most numerous in the United States, Nicaragua, and Australia. Much less frequently, St. Clair is the forename as well as the last name.
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| St. Clair | Nicaragua, Australia, United States, Saint Lucia, Canada |
St Clair, and St. Claire
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arthur st. clair American soldier and politician (1737-1818), US (b. 1737) |
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| david latimer st. clair British Royal Navy officer, captain in 1847 (1786-?) (b. 1786) |
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st. clair mckelway American editor and lawyer (1845-1915), US (b. 1845) |
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| william st. clair soldier, US (b. 1843) |
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malcolm st. clair Hollywood film director, writer, producer and actor (1897-1952), US (b. 1897) |
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margaret st. clair American fantasy and science fiction author (1911-1995), US (b. 1911) |
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| st. clair mulholland dobbs (1870-1944) (b. 1870) |
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michael st. clair Australian actor and writer (b. 1922) |
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| st. clair mckelway American journalist and writer (1905-1980), US (b. 1905) |
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| kevin st. clair American rower, US (b. 1950) |
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| michael st. clair (b. 1940) |
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| archer st. clair (b. 1944) |
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| barry st. clair (b. 1945) |
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| jeffrey st. clair American journalist, US (b. 1959) |
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| jason st. clair researcher ORCID ID = 0000-0002-9367-5749 |
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