A screwball is a baseball and fastpitch softball pitch.

Screwball or Screwballs may also refer to:

Screwball (group), an American hip-hop group Screwball, nickname of George Beurling (1921–1948), Canada's top flying ace of the Second World War Screwball (ice cream), a frozen dessert The Screwball, a Woody Woodpecker animated cartoon short subject Screwballs, a 1983 Canadian comedy film Screwy Squirrel, also known as Screwball Squirrel, an MGM cartoon character of the 1940s Screwball (character), an enemy of Spider-Man in the Marvel Comics universe

See also Screwball comedy, a film genre Ball screw, a mechanical linear actuator Ball screw or ball puller, an accessory for a musket