The present invention relates to a golf putter mainly used for a putting stoke in golf clubs. The golf putter in accordance with the present invention adds a putting information providing apparatus 4, which provides putting information to a player, to an ordinary golf putter including a head 1, a shaft 2 and a grip 3. The putting information providing apparatus 4 comprises an operation switch 41, through which a player inputs distance information from a golf ball to a hole; an LCD 46 displaying putting information; and a gradient sensor 44 providing gradient information corresponding to a tilted state when the putter is laid on a horizontal surface. The putting information providing apparatus 4 displays position information of an imaginary hole against an actual hole based on the distance information and gradient information so that the player can perform a putting stroke toward the imaginary hole.