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.

He was born in Chicago Heights, Illinois and attended Bloom High School there.

Flager died in Keizer, Oregon at the age of 69.

This biographical article relating to an American baseball shortstop is a stub.