Harry Walter Perkowski (September 6, 1922 – April 20, 2016) was a pitcher in Major League Baseball who played between 1947 and 1955 for the Cincinnati Reds / Redlegs (1947, 1949–54) and Chicago Cubs (1955).

In 1947, Perkowski gained a promotion to the Columbia team of the South Atlantic League, where he finished 17–12 with 133 strikeouts and a 3.57 ERA in 247 innings before joining the Reds in late September.

He made 25 appearances for the Cubs in 1955, then returned to the minors in 1956 where he continued pitching until 1960, spending time with Los Angeles, Tulsa, Memphis, Fort Worth and Denver clubs.

In an eight-season majors career, Perkowski posted a 33–40 record with a 4.37 ERA in 184 appearances, including 76 starts, 24 complete games, four shutouts, five saves, and 6972⁄3 innings of work.

Following baseball Perkowski served in local law enforcement, ambulance and school bus driver, and with the West Virginia Department of Highways.