Incilius pisinnus (common name: Michoacan toad) is a species of toad in the family Bufonidae. It is endemic to Mexico and known from the Tepalcatepec Valley in Michoacán. Prior to its description in 2005, it was mixed with Incilius coccifer. It inhabits grassy areas with mesquite shrub, rocks, and barren areas. Males have been observed calling in muddy ditches and flooded grass fields after heavy rains. Although believed adapt to disturbance, severe habitat change and agricultural chemicals remain threats.