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Left-arm orthodox spin, also known as slow left-arm, is a type of spin bowling in cricket. Bowlers using this technique bowl with their left-arm and a finger spin action. Their normal delivery spins from right to left (from the bowler's perspective) when it bounces on the pitch.
The normal delivery of a left-arm orthodox spin bowler attempts to drift the ball in the air into a right-handed batsman and then turn it away from him (from leg to off) upon landing on the pitch.
The major variations of a left-arm orthodox spin bowler are: the topspinner, which turns less and bounces higher; the arm ball, which does not turn at all and drifts into a right-handed batsman; the left-arm spinner's version of a doosra, which turns the other way.
Players listed below are included as they meet specific criteria which are generally recognized as having achieved significant success in the art of left-arm orthodox spin bowling. For example, leading wicket-takers, and inventors of new deliveries.