Villeroy, a member of the European Central Bank's Governing Council, added that an international code of conduct for the Group of Seven (G7) advised against competitive devaluations and making unilateral declarations on currencies' exchange rates.
"Before criticising Europe, any wise person should first of all respect international rules," he said in an interview with the Italian daily Il Sole 24 Ore, published on Tuesday.
In an attack on Germany, Trump's top trade adviser, Peter Navarro, said the euro was "grossly undervalued".
(Reporting by Michel Rose; Editing by Kevin Liffey)
