Abstract: A roof snow guard for retained assembly with a peaked type of metallic corrugated roof having transversely spaced generally vertically inclined corrugations thereon. The snow guard including an angular bar having an approximate length corresponding to the distance between peaks on the roof. A pair of channel shaped brackets are provided at opposite ends of the angular bar. Welds fixedly connect the channel shaped brackets to opposite ends of the angular bar. The channel shaped brackets each define channels for engagement over the corrugations with the channels extending generally at right angles to the angular bar. The angular bar includes a downwardly extending bar leg positioned between the channel shaped brackets and which is adapted to be positioned in vertically spaced overlying relationship to the metallic corrugated roof for inhibiting downward sliding movement of snow on the roof while allowing melted snow or rain to slide downwardly on the roof and to pass beneath the downwardly extended bar leg.