[5] First of all, the author Mantese[6] considers it derived from "Carturnium": a purely philological analysis, however, would like that while the alternation of dental r > l could be accepted, the resulting alteration of vowels and consonants is rare to encounter in a single word.

The researcher Dani[9] states instead that the name comes from the Latin noun "calleu", mangling of "valleus" (vallis), adjective form of calloneus that would mean "valley area".

In addition to the fact that Caldogno does not rise in a valley, it should also be considered the high number of modifications that the name would have undergone to get to the current.

In the history of Caldogno there are two other possible hypotheses, both to be traced back to the Longobard period: Olivieri, a great scholar of the toponymy of the region, assures a Latin origin linked to the name of the ancient owner "Cresius", who first built, in the area overlooking the banks of the Bacchiglione, the huts that constitute the first residential nucleus.

[11] Both Formenton and Olivieri agree that the name of the hamlet derives from "rivus turgulus", “rivo o fiumicello torbido” for the appearance the water had when flowed into the various streams.