Dutch Rennert | |
|---|---|
 Rennert making his distinctive strike call | |
| Born | June 12, 1930 Oshkosh, Wisconsin, U.S. |
| Died | June 17, 2018 (aged 88) St. Augustine, Florida, U.S. |
| Occupation | MLB umpire |
| Years active | 1973–1992 |
| Height | 5 ft 8 in (1.73 m) |
Laurence Henry "Dutch" Rennert Jr. (June 12, 1930 – June 17, 2018) was an American umpire in Major League Baseball who worked in the National League from 1973 to 1992.