| Len Gabrielson | |
| Position: | First baseman |
| Birth Date: | 8 September 1915 |
| Birth Place: | Oakland, California |
| Death Place: | Stanford, California |
| Bats: | Left |
| Throws: | Left |
| Debutleague: | MLB |
| Debutdate: | April 21 |
| Debutyear: | 1939 |
| Debutteam: | Philadelphia Phillies |
| Finalleague: | MLB |
| Finaldate: | April 25 |
| Finalyear: | 1939 |
| Finalteam: | Philadelphia Phillies |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .222 |
| Teams: |
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Leonard Hilburne Gabrielson (September 8, 1915 – November 14, 2000) was a first baseman in Major League Baseball who appeared in five games for the Philadelphia Phillies during the 1939 season.
Gabrielson's son, also named Len Gabrielson, spent nine seasons in Major League Baseball.