Abstract: A double row shingle alignment fixture is disclosed for aligning rows of roofing shingles. The fixture includes a first longitudinal panel having a grooved lower flange with a lower edge and a plurality of grooves adapted to be aligned with a first row of shingles. The first longitudinal panel further includes a second flange on the opposite side thereof for abutting with the lower edge of a second row of shingles and a plurality of first alignment pegs thereon for alignment with the slots in the second row of shingles. The fixture further includes a second longitudinal panel hingedly mounted to the first longitudinal panel along a longitudinal axis to be folded down on top of the second row of shingles after being fastened to the roof. The second panel has an upper flange for abutting with the lower edge of a third row of shingles and a plurality of second alignment pegs thereon for alignment with the slots in the third row of shingles.