| Headercolor: | lightsteelblue |
| Nationality: |  Norway |
| Birth Place: | Krisitiania, Sweden-Norway |
| Death Place: | Oslo, Norway |
| Height: | 178 cm |
| Sport: | Ski jumping, Sailing |
| Club: | Idrettsforeningen Ready |
Jacob Tullin "Tulla" Thams (7 April 1898 – 27 July 1954) was a Norwegian Olympian, who competed in ski jumping and sailing.
He won the first Olympic ski jumping gold medal in 1924, and became the third person (after Gillis Grafström who competed in one sport only and boxer/bobsleigh crew member Eddie Eagan) to medal in both the Winter and Summer Olympics in 1936 as a member of the silver medal-winning Norwegian 8-metre sailing team.
Thams also won the individual large hill at the 1926 FIS Nordic World Ski Championships in Lahti, earned the Holmenkollen medal in 1926 (the first true ski jumper to do so), and would develop the Kongsberger technique in ski jumping (along with fellow Norwegian Sigmund Ruud) that would be the standard until it was superseded by the Daescher technique in the 1950s. Thams is one of the few athletes who have competed in both the Summer and Winter Olympic games.[1]