Daniel Ray Spillner (born November 27, 1951) is an American former professional baseball player.

He played for the San Diego Padres, Cleveland Indians and Chicago White Sox.

After suffering through three losing seasons as a Padre starter, he was part of the major leagues' busiest bullpen in 1977: He and Dave Tomlin each had 76 appearances; Rollie Fingers, 78.

[2] At the end of July that year, The Toledo Blade called him "one of the league's best" relief pitchers, after he had a 1.93 ERA and 12 saves to that point.

Baseball author Bill James wrote that Spillner was the worst hitting pitcher of the 1970s.