Aino-Kaisa Saarinen is a retired Finnish cross-country skier who competed in the World Cup between 1998 and 2018. With 354 individual World Cup starts, Saarinen is the current record holder for both men and women, with Stefanie Böhler in second place with 343.

The FIS Cross-Country World Cup is an annual cross-country skiing competition, arranged by the International Ski Federation (FIS) since 1981. The competition was arranged unofficially between 1973 and 1981, although it received provisional recognition on the 31st FIS Congress, 29–30 April 1977 in Bariloche, Argentina.