An adjustable golf putter comprising a top shaft assembly, a bottom shaft assembly, a hosel assembly, a putter head, and a removable handle assembly. When the handle assembly is installed, the ergonometric golf putter has a zigzag shape. This configuration better enables the golfer to sight the ball and effect a putt. When the handle assembly is removed, the ergonometric golf putter has a straight shape. This configuration enables the golfer to utilize the golf putter as a traditional straight golf putter. In addition, the hosel assembly defines a predetermined lie angle to accommodate the golfer's preference. The same putter is usually adaptable for a right or left handed user.