Mats Fredrik Nyberg (born 23 March 1969) is a former Swedish alpine skier.

He was born in Skön (Sundsvall).

Excelling in giant slalom and super-G, he won a total of seven World Cup races in those disciplines.

Nyberg planned to end his career after the 2006–07 season, but crashed during practice in Austria on 10 November 2006, causing a serious knee injury.

The injury forced him to end his career at the age of 37 without a start in his last season.