Spiny rat may refer to: Echimyidae, the Neotropical spiny rats, a family of South and Central American caviomorph rodents or any of the following genera or species of tropical or subtropical east Asian or Australasian rats of subfamily Murinae: Echiothrix, a rat genus from Sulawesi Maxomys, a genus of Southeast Asian rats Large New Guinea spiny rat (Rattus praetor), a rat species from New Guinea and nearby islands Small spiny rat or Stein's rat (Rattus steini), a rat species from New Guinea Mindanao spiny rat (Tarsomys echinatus) from Mindanao Tokudaia, a rat genus from the Ryukyu Islands