Microlophus barringtonensis or the Santa Fe lava lizard is a species of lava lizard or a population of Microlophus albemarlensis. It inhabits Santa Fe island in the Galápagos. It is the only lava lizard on Santa Fe. It is extremely common.
barringtonensis refers to its range in Santa Fe island, formerly named Barrington Island.
It is debated whether the species is a population or not. Authors have claimed that the population is an entire other species along with M. jacobi and M. indefatigabilis. This view is not widely accepted.