Åke Grönhagen

Åke Edvard Grönhagen (24 January 1885 – 25 December 1974) was a Swedish modern pentathlete and épée fencer who competed in the 1912 Summer Olympics. He finished fourth in the Olympic modern pentathlon, and was eliminated in the first round of the individual épée competition.

Grönhagen's grandson, Carl William "Bill" Gronhagen, was an air traffic controller at Los Angeles International Airport.