Jan Henri Ducroz (born 6 May 1971) is an internationally elite curler from Chamonix, France.
The team finished the round robin competition with a 6 - 5 record and in a four way tie for fourth place.
In 2008 he returned to the World Championships with the same team and again ended the round robin portion with a 6 - 5 record, this time to finish in fifth place.
They finished with a 4 - 7 record and in eighth place; however, it was good enough to earn a spot for Team France at the 2010 Vancouver Olympics.
Jan Henri Ducroz is officially listed as the Second for Team France at the Olympics; however, at some competitions he has thrown Lead stones.