| Red Nonnenkamp | |
| Position: | Outfielder |
| Bats: | Left |
| Throws: | Left |
| Birth Date: | July 7, 1911 |
| Birth Place: | St. Louis, Missouri |
| Death Place: | Little Rock, Arkansas |
| Debutleague: | MLB |
| Debutdate: | September 6 |
| Debutyear: | 1933 |
| Debutteam: | Pittsburgh Pirates |
| Finalleague: | MLB |
| Finaldate: | June 5 |
| Finalyear: | 1940 |
| Finalteam: | Philadelphia Phillies |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .262 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 24 |
| Teams: |
|
Leo William "Red" Nonnenkamp (July 7, 1911 - December 3, 2000) was an outfielder in Major League Baseball who played between and for the Pittsburgh Pirates (1933) and Boston Red Sox (1938–1940). Listed at, 165 lb., Nonnenkamp batted and threw left-handed. He was born in St. Louis, Missouri.
In a four-season career, Nonnenkamp was a .262 hitter (69-for-263) with 49 runs and 24 RBI in 155 games, including six doubles, two triples, six stolen bases, and a .347 on-base percentage. Nonnenkamp died at the age of 89 in Little Rock, Arkansas.