Johan Grøttumsbråten (February 12, 1899 – January 24, 1983) was a Norwegian skier who competed in Nordic combined and cross-country. Dominating both events in the 1920s and early-1930s, he won several medals in the early Winter Olympics.
In addition, he won three gold medals at the FIS Nordic World Ski Championships: In 1931 he won both the cross-country 18 km and Nordic combined, after winning the Nordic combined event earlier in 1926.
Grøttumsbråten is one of only four people to ever win the Holmenkollen ski festival's Nordic combined event five times (1923, 1926, 1928, 1929, and 1931). In 1924, he shared the Holmenkollen medal with fellow Norwegian Nordic combined athlete Harald Økern.