Karl Gustaf Jonsson (7 July 1903 – 30 July 1990) was a Swedish cross-country skier.

He competed in the 50 km event at the 1928 and 1932 Olympics and won a silver medal in 1928, finishing ninth four years later.

In 1930 he finished second in the Vasa run, and in 1925 won the national 30 km title.

He was featured in the 1988 documentary film De sista skidåkarna (The Last Skiers).

[1] All results are sourced from the International Ski Federation (FIS).