Loren C. Murchison (December 17, 1898 – June 11, 1979) was an American athlete, double gold medal winner in 4 × 100 m relay at the Olympic Games.
At the 1920 Summer Olympics, Murchison finished fourth in 200 m and sixth in 100 m. He also ran the third leg in the gold medal winning United States 4 × 100 m relay team, which set a new world record of 42.2 s in the Olympic final. At the 1924 Summer Olympics, Murchison was again sixth in 100 m and won his second Olympic gold medal as an opening leg in the world record (41.0 s) setting American 4 × 100 m relay team.
Murchison was an outstanding indoor runner. He won 14 titles (9 individual and 5 in the relay) at the United States premier indoor athletics meet, the Millrose Games. He was also national indoor champion at the 60 y in 1919–20 and 1922–24, and 300 y in 1919–20 and 1923–24.
Murchison was also a prolific breaker of records indoors. Amongst the world best times he equaled or broke are:
- equaled 60 y best of 6.4 s in 1920, 1922 and 1923;
- established new 60 y best of 6.2 s in 1923;
- 50 m of 6.0 s in 1925;
- 300 y of 31.2 s;
- 220 y best of 22.4 s.
It was such exploits that inspired Charley Paddock (1920 Olympic 100 m champion) to call Murchison "the greatest indoor sprinter of his generation and the finest starter of all-time.
A resident of Leisure Village in Lakewood Township, New Jersey, Murchison died at the age of 80 on June 11, 1979, at Point Pleasant Hospital in Point Pleasant, New Jersey.