We report seven new records of the threatened Mexican hairy dwarf porcupine Sphiggurus mexicanus (formerly Coendou mexicanus) in southwestern Michoacán, Mexico. These records extend northwardly the known distribution of S. mexicanus along the Pacific coast into Michoacán, and constitute the first known occurrences in temperate pine and pine-oak forests. Although additional distributional data are needed, populations of S. mexicanus in western Michoacán may prove important for conservation planning and management of this threatened species.