Abstract: An improved string trimmer guard for attachment to string trimmers having an elongated shaft with a lower section and a rotary cutting head mounted at the lower end of the shaft to carry a string along a circular pathway, the guard adapted to be mounted on the shaft adjacent the cutting head, and including a barrier at the front of the trimmer, a pair of parallel support arms extending rearwardly from the barrier on opposite sides of the shaft, a first clamp attached along the support arms, and a shaft clamp attached to the shaft, the first clamp and shaft clamp being attached to each other.