Erethizontinae

{{Short description|Subfamily of rodents}}

{{automatic taxobox

| image = Porcupine-BioDome.jpg

| image_caption = North American porcupine (Erethizon dorsatum)

| taxon = Erethizontinae

| authority = Bonaparte, 1845

| subdivision_ranks = Genera

| subdivision =

• Coendou
• Erethizon

}}

Erethizontinae is a subfamily of the New World porcupine family Erethizontidae,{{MSW3 |heading=SUBFAMILY Erethizontinae |id=13400095}} and includes all species of the family with the exception of the bristle-spined rat, Chaetomys subspinosus, which is classified in its own subfamily, Chaetomyinae.