A no ball occurs when the bowler:

• changes the arm with which he bowls without notifying the umpire
• changes the side of the stumps from which he bowls without notifying the umpire
• bowls underarm
• throws, rather than bowls, the ball
• throws or bowls the ball before actually entering the "delivery stride"
• bowls with the back foot touching or outside the "return crease" (the lines on either side of the stumps)
• bowls with the front foot wholly in front of the "popping crease" (the line in front of the stumps)
• bowls a ball that rolls or bounces more than twice before reaching the opposite popping crease
• bowls a ball that comes to rest before reaching the opposite popping crease
• bowls a ball, and the wicket-keeper comes in front of the stumps at the opposite end before the ball passes those stumps or touches the batsman or his bat
• bowls a ball, and any part of a fielder's anatomy touches or passes over the pitch before the ball passes those stumps or touches the batsman or his bat (this restriction does not apply to the bowler himself)
• bowls a ball, and at the instant of delivery, there are more than two fielders, excluding the wicket-keeper, behind the opposite popping crease and on the "on side" (left side for a right-handed batsman, right side for a left-handed batsman). (See Bodyline for an explanation)
• bowls a ball that is physically dangerous to the batsman
• bowls a ball that does not bounce and passes over the batsman's waist
• (In Test Matches) bowls, for the third or subsequent time in a single over, a ball that passes over the batsman's shoulder
• (In One-Day Matches) bowls, for the second or subsequent time in a single over, a ball that passes over the batsman's shoulder
• (In One-Day Matches) bowls a ball, and at the instant of delivery, there are more than five fielders in the "on side" (left side for a right-handed batsman, right side for a left-handed batsman).
• (In One-Day Matches) bowls a ball during the first fifteen overs, and at the instant of delivery, there are more than two fielders in the outfield as demarcated by "dots" marked on the field.