The surname Bigolotti is very infrequent and is located mainly in northern Italy, especially in the Milan and Lodi areas and some areas of Emilia. According to E. Rossoni, it could derive from the old Milanese term bigolott, which designated an itinerant haberdasher, that is, a travelling seller of small objects. This origin places it within the group of occupational surnames, formed from the trade of the founder of the lineage.

For his part, F. De Laurentiis proposes a different interpretation, linking the surname to a nickname of popular character derived from the Venetian noun bigolo, which refers to a type of long, thin pasta. This term also had figurative uses in colloquial language, being able to allude both to elongated shapes —such as a strip of land— and, in a jocular tone, to physical characteristics, which suggests a nickname origin based on appearance or popular humour.

Taken together, the various interpretations agree in pointing to an origin linked to everyday language —whether from a trade or from a nickname—, with a regional evolution that gave rise to a rare and geographically limited form within the panorama of Italian surnames.