Following the disappointment of an early World Cup exit, the French rugby federation (FFR) announced the news on Wednesday.
The 27-year-old will miss the Six Nations between February 2 – March 16 next year in order to participate in SVNS, a seven-a-side circuit run by World Rugby.
The FFR, Toulouse, and Dupont will hold a press conference on Monday, 250 days before the Games, to announce Dupont’s participation.
In January, Dupont will join France’s sevens squad before the SVNS events in Vancouver, Canada on February 23-24 and Los Angeles on March 2-3.
Last month, Dupont played for France in an agonizing World Cup quarter-final loss to eventual winners South Africa at the Stade de France.
The stadium in northern Paris will also host the men’s and women’s sevens competitions at the Olympics next July.
A few months ago, Dupont announced that they would play in the event, which first appeared in the 2016 Olympics.
Former New Zealand centre Sonny Bill Williams and South Africa winger Cheslin Kolbe, both World Cup winners, have also played at past Olympic Games.