Ola Vigen Hattestad (born 19 April 1982) is a former Norwegian cross-country skier who competed from 2002 through 2018.

Hattestad has 13 individual World Cup victories, all in the sprint events.

Hattestad won two gold medals at the 2009 World Championships, earning them in the individual and team sprint events.

Having ranked sixth in the qualifying round, Hattestad progressed through the quarterfinals and semifinals by winning each round, eventually taking the title ahead of fellow Norwegian Johan Kjølstad.

He was initially not qualified for the Norwegian team for the 2014 Winter Olympics, but this changed before the opening individual sprint, where he emerged victorious after the fastest prologue, and winning the quarterfinal, semifinal and final.