Leon Alton Carlson (February 17, 1895 – September 15, 1961), nicknamed "Swede", was a professional baseball pitcher. He pitched in three games in Major League Baseball for the Washington Senators in 1920, all in relief.
Leon Carlson
| Given name: | Leon Alton Carlson |
| Nicknames: | Swede |
| Primary Pos: | Pitcher |
| Hght/Wght: | 6'3" / 195 lbs |
| Bats/Throws: | R / R |
| Born: | Feb 17, 1895 in Jamestown, NY |
| Died: | Sep 15, 1961 in Jamestown, NY (66 years old) |
| Debut: | May 31, 1920 |