Leonard Brodbeck Swormstedt (October 6, 1878 – July 19, 1964) was an American starting pitcher in Major League Baseball who played between 1901 and 1906 for the Cincinnati Reds (1901–1902) and Boston Americans (1906).

Swormstedt batted and threw right-handed.

In a three-season career, Swormstedt posted a 3–4 record with 22 strikeouts a 2.22 ERA in eight appearances, including seven complete games, 10 walks, 58 hits allowed, and 65.0 innings of work.

Swormstedt died at the age of 85 in Salem, Massachusetts.

This biographical article relating to an American baseball pitcher born in the 1870s is a stub.