In the sport of cricket, the crease is a certain area demarcated by white lines painted or chalked on the field of play, and pursuant to the rules of cricket they help determine legal play in different ways for the fielding and batting side. They define the area within which the batsmen and bowlers operate. The term crease may refer to any of the lines themselves, particularly the popping crease, or to the region that they demark. Law 7 of the Laws of Cricket governs the size and position of the crease markings, and defines the actual line as the back edge of the width of the marked line on the soil, i.e., the edge nearest to the wicket at that end.

Four creases (one popping crease, one bowling crease, and two return creases) are drawn at each end of the pitch, around the two sets of stumps. The bowling creases lie 22 yards (66 feet or 20.12 m) apart, and mark the ends of the pitch. For the fielding side, the crease defines whether there is a no-ball because the wicket-keeper has moved in front of the wicket before he is permitted to do so. In addition, historically part of the bowler's back foot in the delivery stride was required to fall behind the bowling crease to avoid a delivery being a no-ball. This rule was replaced by a requirement that the bowler's front foot in the delivery stride must land with some part of it behind the popping crease (see below).