A national sport or national pastime is a sport or game that is considered to be an intrinsic part of the culture of a nation. Some sports are de facto national sports, as baseball is in the U.S., while others are de jure as lacrosse and ice hockey are in Canada.

Kaillie Humphries (née Simundson) (born September 4, 1985 in Calgary) is a Canadian bobsledder. Humphries is an Olympic gold medalist in the two woman at the 2010 Winter Olympics, and has also achieved four FIBT World Championship medals including being world champion in 2012.

She won the silver medal in the mixed bobsleigh-skeleton team event at the 2008 FIBT World Championships in Altenberg, Germany. Humphries finished the 2009-10 Bobsleigh World Cup second overall with a third place finish on the last stop at Igls.

Humphries won a gold medal in the Two-woman competition at the 2010 Winter Olympics with Heather Moyse. The silver medal was won by fellow Canadians Shelley-Ann Brown and Helen Upperton. It marked the first time of the 2010 Olympics that Canadians had won two medals in one event.

During the next couple of years, Humphries met with limited success on the World Cup tour and in World Championship competition. However, during the 2012 championships in Lake Placid she won her first world championship gold medal with Jennifer Ciochetti as her brakeman. This was also the first gold for any Canadian woman's sled team at the world championships. When asked about what her result means on top of her Olympic gold she said that "It feels amazing. It is another goal accomplished. This means a lot to me. I feel like I'm still growing as a pilot and I try to learn from every experience. I have been working on my consistency and I'm glad it showed here." In the team event, Humphries went on to help guide the Canadians to a bronze medal as well, adding to her medal tally that year.