Abstract: A safety line anchor device holds a safety line for workmen and is generally intended for use in roof construction. The device is especially useful for use on wood truss roofs of any pitch. The first embodiment of the invention is constructed and arranged for use on one side of a wood truss, 24" centered roof of any pitch. This safety line anchor device comprises a main bar from which fastening straps extend, and at least one anchoring means for holding a safety line. The device is adapted to receive a fastening means, by which it is fixed to a roof. This embodiment can be designed for one or multiple anchor points. A second embodiment of the invention is adapted for use on the peak of a roof and comprises two pivotally joined anchors which straddle the roof peak, each anchor having an anchoring means for holding a safety line attached thereto.