Miter saw having holder fixing mechanism

A miter saw includes a base section on which a workpiece is mounted, a saw blade section supporting a circular saw blade having a rotation axis extending in a lateral direction, a holder shaft extending in a direction perpendicular to the rotation axis, a holder tiltable about the holder shaft, two parallel guide bars disposed slidable with respect to the holder and extending toward the rotation axis, a support segment fixed to the guide bars and supporting the saw blade section, a pivot shaft disposed between the saw blade section and the support segment and extending in parallel with the rotation axis so that the saw blade section is pivotable about the pivot shaft, and a holder fixing mechanism that fixes a tilting posture of the holder and includes an operation member supported to the holder and having a rotatable shaft passing through a space between the two guide bars.