Gustaf Malcolm "Gösta" Lilliehöök (25 May 1884 – 18 November 1974) was a Swedish officer and modern pentathlete.

He won a gold medal in the first contested modern pentathlon at the Olympic Games in 1912.

He was commissioned as an officer in Svea Artillery Regiment in 1906 with the rank of underlöjtnant.

[2] He won a gold medal in the first contested modern pentathlon at the Olympic Games in 1912.

[4] In 1922, Lilliehöök married Anna de Fine Blauw (born 1891), the daughter of the artist Dick Blauw and Marie de Fine Beyer.