Cognomen Lillefosse (Lillefosse 
) , across the world, is a rare family name. The last name Lillefosse is habitual in Norway, where it is quite a rare surname, and Poland, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Lillefosse | Norway, Poland |
| anna t. lillefosse Norwegian woman (b. 1866-01-06, married to botanist Torkel Lillefosse), NO (b. 1866) |
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| torkel lillefosse Norwegian botanist (1868-1946), NO (b. 1868) |
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| marie lillefosse Norwegian housewife, farmer and plant collector (1880-1969) (b. 1880) |
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| brita lillefosse Norwegian woman (1904-1982, daughter of botanist Torkel Lillefosse), NO (b. 1904) |
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bjørnar sandnes lillefosse Norwegian athletics competitor (b. 1992) |
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pål haugen lillefosse Norwegian pole vaulter |
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