Gerald Smith Nyman (born November 23, 1942) is a former left-handed Major League Baseball pitcher who played from 1968 to 1970 for the Chicago White Sox and San Diego Padres.

On August 24 of that year, he made his big league debut, facing the Minnesota Twins.

He pitched 2/3 of an inning in relief in his first game, allowing a hit and a walk but surrendering no runs.

That year, he played for the Lodi Padres, Evansville Triplets and Hawaii Islanders, going a combined 2–9 with a 4.59 ERA in 28 games.

From 2004 to 2006, he served as the minor league pitching coordinator for the Tampa Bay Devil Rays.