Who is a wicket keeper?

The wicket-keeper in the sport of cricket is the player on the fielding side who stands behind the wicket or stumps being guarded by the batsman currently on strike. The wicket-keeper is the only member of the fielding side permitted to wear gloves and external leg guards. The wicket-keeper may also wear a helmet with a mesh face guard to help protect from injury.

It is essentially a specialist role although a keeper is occasionally called upon to bowl, in which case another member of the fielding side temporarily keeps wicket. The role of the keeper is governed by Law 40 of the Laws of Cricket.