Tree rat or tree-rat may refer to the following rodents:

Black rat (Rattus rattus), occurring worldwide; Brachytarsomys (several species), from Madagascar; Callistomys (the painted tree-rat), from Brazil; Carpomys, from the Philippines; Chiromyscus (Fea's tree rat), from southeastern Asia; Conilurus, from Australia and southern New Guinea; Diplomys labilis, the rufous tree rat, from Panama, Colombia, and Ecuador; Diplothrix, the Ryukyus Islands tree rat, from the Ryukyu Islands; Echimys, from Amazonia; Kadarsanomys, Sody's tree rat, from Java; Lenothrix, the gray tree rat, from Southeast Asia; Lonchothrix, the tuft-tailed spiny tree rat, from Brazil; Makalata, from Amazonia; Mesembriomys, from Australia; Mesomys, from Amazonia; Niviventer langbianis, the dark-tailed tree rat, from Southeast Asia; Papagomys armandvillei, the Flores giant tree rat, from Flores; Pattonomys, from South America; Phyllomys, from the Atlantic Forest of eastern South America; Pithecheir, from Southeast Asia; Santamartamys, the red crested tree rat, from Colombia; Thallomys nigricauda, the black-tailed tree rat, from southwestern Africa; Toromys, the giant tree rat, from Brazil; Xenuromys, the mimic tree-rat, from New Guinea; Mesocricetus auratus, the Syrian hamster. Macaque. see Monkey hate article for more context