Kenneth Allan Grundt (born August 26, 1969) is an American former middle-relief pitcher who played in Major League Baseball.

He played from 1992 through 1998 for the San Francisco Giants, Colorado Rockies, Boston Red Sox, and Florida Marlins organizations, collecting a 31–19 mark with a 2.58 ERA and 35 saves in 288 appearances.

Grundt entered the majors in 1996 with the Boston Red Sox (first game on August 8, 1996, at Age 26), playing for them until the 1997 midseason.

Following his playing career, Grundt has worked as senior instructor at Frozen Ropes, a baseball instructional center located at Dickson City, Pennsylvania.

This biographical article relating to an American baseball pitcher born in the 1960s is a stub.