British Bulldog is a tag-based playground and sporting game, commonly played in schoolyards and on athletic fields in the UK, Canada, South Africa, Australia, and related Commonwealth countries, as well as in the U.S. and Ireland. The object of the game is for one player to attempt to intercept other players who are obliged to run from one designated area to another. British Bulldog is characterised by its physicality (i.e. the captor inevitably has to use force to stop a player from crossing) and is often regarded as violent, leading it to be banned from many schools due to injuries to the participants.

The game is a descendant of traditional chasing games recorded from the 18th and 19th centuries, which partially evolved into collision-sport-related games during the early 20th century by the inclusion of lifting and tackling techniques. In a sport's historical context, like its predecessors, British Bulldog has been used as a skill-and-drill device to reinforce and further develop locomotion skills fundamentally vital to American football, rugby, soccer, hockey and related team sports.