Jason Ernest Szuminski (born December 11, 1978) is a former right-handed Major League Baseball pitcher who has the distinction of being the first athlete from Massachusetts Institute of Technology and the first United States Air Force reservist (as a First Lieutenant) to play in Major League Baseball.

In his first major league appearance, a nationally televised Sunday night game against the San Francisco Giants, Szuminski pitched a scoreless inning, in the process recording the third out against home run champion Barry Bonds on a long fly ball to the warning track.

Due to the Padres' early-season successes, Szuminski, a long reliever out of the bullpen, saw limited game action.

In May 2004, he was dropped from the Padres' 25-man roster and returned to the Cubs (per terms of the Rule 5 draft) after incurring just 37 days of major league service.

While he was finishing the year with the Cubs' Triple-A affiliate in Iowa, Szuminski injured his throwing shoulder and was released by the organization.