The surname Bacchiega (and related forms) presents an uncertain origin and multiple interpretations, with a sporadic diffusion in regions such as Emilia and the lower Veneto. According to E. Rossoni, it could derive from a nickname based on the term bacchio ("stick"), possibly through a phonetic variation that transformed an initial p into b. This interpretation suggests a descriptive or symbolic origin, linked to an everyday object that may have characterised the person.

For his part, F. De Laurentiis proposes a different hypothesis, linking the surname with the medieval French term bachelier, which designated a young man of noble family in training to be a knight, or someone who had reached a first university degree. In a figurative sense, this term could also have an ironic or pejorative nuance, referring to someone presumptuous or who pretended to be more than he was. This interpretation introduces a cultural and social origin, rather than a strictly descriptive one.

In addition, F. De Laurentiis considers other possible derivations: from the term bacheca (a board or display case where notices are shown), from bacche ("berries", fleshy fruits), or even from the activity linked to the raising of the baco da seta ("silkworm"), especially in areas where this practice was frequent. Taken together, the various hypotheses show a surname of complex origin, which could have been formed from nicknames, professional terms or diverse linguistic influences according to the regional context.