Cognomen Critchfield (Critchfield 
) , globally, is quite a rare family name. The last name Critchfield is habitual in Isle of Man, where it is quite a rare surname, the United States, where it is a rare surname, and New Zealand. Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Canada.
| VARIANT | COUNTRY |
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| Critchfield | Canada, United States, United Kingdom, Germany, South Africa |
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charles louis critchfield American mathematical physicist, US (b. 1910) |
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| anne critchfield (b. 1887) |
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| larry critchfield American football player (1908-1965), US (b. 1908) |
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| james h. critchfield CIA officer, US (b. 1917) |
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| howard j. critchfield American geographer (1920-2010), US (b. 1920) |
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| william burke critchfield American botanist and geneticist (1923–1989), US (b. 1923) |
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| richard critchfield American writer (b. 1931) |
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| russ critchfield American basketball player-coach, US (b. 1946) |
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| ron critchfield college basketball player (1959–1960) Oregon State |
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| jeffrey m critchfield researcher |
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| kenneth l. critchfield researcher |
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| r.l. critchfield botanist |
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| agatha s critchfield researcher ORCID ID = 0000-0003-1411-1150 |
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| jeffery critchfield researcher |
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| brian l. critchfield (b. 1978) |
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