Blackball can mean several things:

• Blackball is a town in New Zealand.
• To blackball somebody is to exclude them from a club.
• Blackball is a 2003 movie starring Paul Kaye.
• Blackball is a term used to represent the black baseball movement including the formation of Negro league baseball.
• Blackball (Offspring song) is a song by the punk rock band The Offspring, on their 1989 self-titled album (The Offspring).
• Blackball (KMFDM song) is also a song by the industrial band KMFDM, on their 2003 album (WWIII).
• Blackball is a unified set of rules for eight ball pool, sanctioned by the World Pool-Billiard Association.
• The Bobby Dukes Story a 2004 film.