Pronounced NILL-s, not like Niles. Common nick name is Nisse, which is also what you call a small gnome/ Santa's little helpers. Tomtenisse is sort of "small santa".
-- Anonymous User 12/16/2005
The Wonderful Adventures of Nils is a famous work of fiction by the Swedish author Selma Lagerlöf, published in two parts 1906 and 1907. The background for publication was a commission from the National Teachers' Association in 1902 to write a geography reader for the public schools.
Nils is an adorable name for a little boy, and still doesn't seem ridiculous on an older man. It's short and easy to say. It seems like a good name to choose if you want an uncommon (but still nice-sounding) name.