| Wally Flager | |
| Position: | Shortstop |
| Bats: | Left |
| Throws: | Right |
| Birth Date: | 3 November 1921 |
| Birth Place: | Chicago Heights, Illinois |
| Death Place: | Keizer, Oregon |
| Debutleague: | MLB |
| Debutdate: | April 17 |
| Debutyear: | 1945 |
| Debutteam: | Cincinnati Reds |
| Finalleague: | MLB |
| Finaldate: | August 8 |
| Finalyear: | 1945 |
| Finalteam: | Philadelphia Phillies |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .241 |
| Stat2label: | Home runs |
| Stat2value: | 2 |
| Stat3label: | Runs batted in |
| Stat3value: | 21 |
| Teams: | |
Walter Leonard Flager (November 3, 1921 – December 16, 1990) was a professional baseball player. He was a shortstop for one season (1945) with the Cincinnati Reds and Philadelphia Phillies. For his career, he compiled a .241 batting average in 220 at-bats, with two home runs and 21 runs batted in.
He was born in Chicago Heights, Illinois and attended Bloom High School there. Flager died in Keizer, Oregon at the age of 69.