Helena Blach Lavrsen ( Blach; born 7 June 1963) is a Danish curler, several times the skip for the Danish team, an Olympic medalist, and World and European champion. She received a silver medal at the 1998 Winter Olympics in Nagano. This was the first medal, Denmark has ever won at a Winter Olympics, and the only one until 2026, when Viktor Hald Thorup won silver medals at the 2026 Olympics. She has obtained four medals at the World Curling Championships, and is European champion from 1994.
Blach Lavrsen was the flag bearer for Denmark at the 1998 Winter Olympics opening ceremony.