fact-finder

Noun
(plural factfinders)
Noun
(plural fact-finders)
- (law) The person or persons (such as jurors or judges) who consider evidence in a legal proceeding and make determinations on assertions of fact.
fact-finder - Legal Definition

n
The person or persons in a
particular trial or proceeding with responsibility for determining the facts.
The jury typically acts as the fact-finder in any case where there is one;
otherwise, the judge will perform that function along with that of making determinations
of law.