Family name Lytwyn (Lytwyn 
) , across the world, is a rare cognomen. The last name Lytwyn is habitual in Canada, where it is a rare surname, Argentina, and New Zealand. In absolute terms, it is commonest in the United States, Canada, and Argentina.
| VARIANT | COUNTRY |
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| Lytwyn | United Kingdom, Canada, United States, Argentina, France |
| charlie lytwyn British association football player (born 1964), GB (b. 1964) |
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| jeff lytwyn college basketball player (1975–1977) Iona |
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| jaroslaw lytwyn |
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| kevin lytwyn Canadian artistic gymnast, CA (b. 1991) |
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