Frida Karlsson (born 10 August 1999) is a Swedish female cross-country skier.
She won a silver medal in the women's 10 kilometres classical, bronze medal in the women's 30 kilometre freestyle mass start, and gold as a member of the women's 4 × 5 kilometre relay during the 2019 FIS World Championships in Seefeld in Tirol, Austria.
With this win, she became the youngest cross-country skiing World Cup gold medalist in history.
In April 2018, she received a 50,000 Swedish kroner prize for promising new skiers from former skier Johan Olsson and Banco Santander.
The award also gave her the opportunity to use Olsson as a mentor.
Karlsson is the daughter of former cross-country skier Ann-Marie Karlsson.