Around the world, Lewthwaite (Lewthwaite 
) is an extremely rare unknown gender first name. Predominantly, Lewthwaite is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Lewthwaite | United Kingdom, South Africa, Australia, United States, Canada |
| sir william lewthwaite, 1st baronet (1853-1927) (b. 1853) |
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| sir william lewthwaite, 2nd baronet (1882-1933) (b. 1882) |
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| sir william anthony lewthwaite, 3rd bt. (1912-1993) (b. 1912) |
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| sir rainald gilfrid lewthwaite, 4th bt. (1913-2003) (b. 1913) |
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| sir david rainald lewthwaite, 5th bt. (1940-2004) (b. 1940) |
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