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Vingegaard, who has progressed as a top climber, will help American star Sepp Kuss in the key mountain stages across the Tour.
Dumoulin, who was expected to be in the team, announced at the beginning of the year that he was taking a break in his career. Since then, the former Giro winner has not returned to competition.
Dumoulin’s replacement is the strongest signal yet that Dumoulin, 30, might not return from his self-imposed break from competition.
It’s unknown if or when Dumoulin might return to competition, but it’s obvious Jumb0-Visma is making its most important racing plans without him.
This season, Vingegaard won two stages and the overall at Coppi e Bartali as well as a stage at the UAE Tour, and was second at Itzulia Basque Country behind Roglič.
“He has shown that he can play a crucial role in high mountains, in the Alps and in the Pyrénées,” said sporting director Grischa Niermann. “In theory, Jonas may be a candidate for a grand tour himself … but he needs time.”
— AFP contributed to this report
Jumbo-Visma for 2021 Tour de France:
Primož Roglič (SLO)
Steven Kruijswijk (NED)
Wout van Aert (NED)
Sepp Kuss (USA)
Tony Martin (GER)
Mike Teunissen (NED)
Robert Gesink (NED)
Jonas Vingegaard (DEN)