| Gustaf Lewenhaupt | |
| Birth Name: | Carl Gustaf Sixtensson Lewenhaupt |
| Birth Date: | 20 August 1879 |
| Birth Place: | Örebro, Sweden |
| Death Place: | Stockholm, Sweden |
| Allegiance: | Sweden |
| Branch: | Swedish Army |
| Serviceyears: | 1902 - 1932[1] |
| Rank: | Major |
| Unit: | Life Guards of Horse |
| Laterwork: | Cabinet chamberlain |
Carl Gustaf Sixtensson Lewenhaupt (20 August 1879 – 7 August 1962) was a Swedish Count, officer, courtier, horse rider and modern pentathlete who competed in the 1912 Summer Olympics.[2]
In the equestrian jumping event he finished ninth individually (tied with his brother Charles Lewenhaupt) and won the gold medal with the Swedish team. He placed seventeenth in the modern pentathlon competition.[3] [4]