Rule used by several different team sports
For the term for one half of the field in cricket, see
Off side.
Offside is a rule used by several different team sports regulating aspects of player positioning. It is particularly used in field sports with rules deriving from the various codes of football, such as association football, rugby union and rugby league, and in similar 'stick and ball' sports e.g. ice hockey, broomball, field hockey and bandy.