Abstract: A shingle cutting tool for cutting portions of shingles from an existing shingled roof. The tool is adapted for pushing or pulling action while the user is in an upright position, and includes one or more V-shaped cutting notches formed in the end of a generally rectangular steel plate, the cutting notch forming a lifting lip that is used to pry a shingle upwardly into a position so that it can be cut. The tool is pushed along or pulled along the roof surface so that the respective shingle tabs enter the V-shaped cutting notch to permit the tabs to be severed from the existing roof.