fils

Fils is a term with multiple uses in French-language contexts and as a surname. In French, fils means "son," a masculine noun used to denote a male child and to indicate descent within a family. The feminine counterpart is fille, and the plural form of fils is also fils, with context clarifying singular or plural usage. The word derives from Latin filius, via Old French fils, and is cognate with related terms in other Romance languages. In genealogical and legal language, phrases such as "fils de" (son of) are common.

As a surname, Fils occurs in Francophone populations and can arise as a patronymic designation or as a shortened form of longer names. It appears in various countries with historical French influence, and there are individuals bearing the name in contemporary records across different fields.

In onomastics and culture, Fils may appear as part of compound surnames or in toponyms derived from lineage or family associations, reflecting historical naming practices. In modern usage, it remains primarily a common noun and a surname, though it can appear in organization or product names that emphasize heritage or filial themes.