Walter Joseph Schmidt (March 20, 1887 – July 4, 1973) was a professional baseball player who played catcher in the Major Leagues from 1916–1925. He would play for the Pittsburgh Pirates and St. Louis Cardinals. He later was the player/manager of the Mission Bells of the Pacific Coast League during the 1926 season. His brother, Boss Schmidt, also played professional baseball.
In 766 games over 10 seasons, Schmidt posted a .257 batting average (619-for-2411) with 216 runs, 3 home runs, 234 RBI, 57 stolen bases and 137 bases on balls. Defensively, he finished his career with a .980 fielding percentage. Him and his brother Boss Schmidt were known for their physical strength and toughness.